Home / 321,316.04-443,421-176,120.72

Finding the Fourth Proportional to 321,316.04, 443,421 and 176,120.72

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Solution

The fourth proportional to 321,316.04, 443,421 and 176,120.72 is: 243,049.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,316.04 : 443,421 = 176,120.72 : x
  2. Step 2: Convert to fraction form
    321,316.04/443,421 = 176,120.72/x
  3. Step 3: Cross multiply
    321,316.04x = 443,421 × 176,120.72
  4. Step 4: Simplify right side
    321,316.04x = 78,095,625,783.12
  5. Step 5: Solve for x
    x = 78,095,625,783.12/321,316.04
  6. Step 6: Final answer
    x = 243,049.26

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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.