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Finding the Fourth Proportional to 311,556.83, 429,948.81 and 168,316.88

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Solution

The fourth proportional to 311,556.83, 429,948.81 and 168,316.88 is: 232,277.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,556.83 : 429,948.81 = 168,316.88 : x
  2. Step 2: Convert to fraction form
    311,556.83/429,948.81 = 168,316.88/x
  3. Step 3: Cross multiply
    311,556.83x = 429,948.81 × 168,316.88
  4. Step 4: Simplify right side
    311,556.83x = 72,367,640,109.17
  5. Step 5: Solve for x
    x = 72,367,640,109.17/311,556.83
  6. Step 6: Final answer
    x = 232,277.50

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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.