Home / 399,387.20-551,109-229,676

Finding the Fourth Proportional to 399,387.20, 551,109 and 229,676

Calculator

Solution

The fourth proportional to 399,387.20, 551,109 and 229,676 is: 316,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,387.20 : 551,109 = 229,676 : x
  2. Step 2: Convert to fraction form
    399,387.20/551,109 = 229,676/x
  3. Step 3: Cross multiply
    399,387.20x = 551,109 × 229,676
  4. Step 4: Simplify right side
    399,387.20x = 126,576,510,684
  5. Step 5: Solve for x
    x = 126,576,510,684/399,387.20
  6. Step 6: Final answer
    x = 316,926.81

Related Problems

Find fourth proportional to 199,693.60, 275,554.50 and 114,838
Half scale
Find fourth proportional to 798,774.40, 1,102,218 and 459,352
Double scale
Find fourth proportional to 399,388.20, 551,110.38 and 229,677
Similar ratio
Find fourth proportional to 599,080.80, 826,663.50 and 344,514
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.