Home / 284,129.61-392,097.04-156,805.21

Finding the Fourth Proportional to 284,129.61, 392,097.04 and 156,805.21

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Solution

The fourth proportional to 284,129.61, 392,097.04 and 156,805.21 is: 216,390.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,129.61 : 392,097.04 = 156,805.21 : x
  2. Step 2: Convert to fraction form
    284,129.61/392,097.04 = 156,805.21/x
  3. Step 3: Cross multiply
    284,129.61x = 392,097.04 × 156,805.21
  4. Step 4: Simplify right side
    284,129.61x = 61,482,858,697.58
  5. Step 5: Solve for x
    x = 61,482,858,697.58/284,129.61
  6. Step 6: Final answer
    x = 216,390.18

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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.