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Finding the Fourth Proportional to 531,145.68, 732,721.32 and 316,217.04

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Solution

The fourth proportional to 531,145.68, 732,721.32 and 316,217.04 is: 436,224.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,145.68 : 732,721.32 = 316,217.04 : x
  2. Step 2: Convert to fraction form
    531,145.68/732,721.32 = 316,217.04/x
  3. Step 3: Cross multiply
    531,145.68x = 732,721.32 × 316,217.04
  4. Step 4: Simplify right side
    531,145.68x = 231,698,966,955.29
  5. Step 5: Solve for x
    x = 231,698,966,955.29/531,145.68
  6. Step 6: Final answer
    x = 436,224.89

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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.