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Finding the Fourth Proportional to 284,727.60, 392,907.20 and 157,395.60

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Solution

The fourth proportional to 284,727.60, 392,907.20 and 157,395.60 is: 217,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,727.60 : 392,907.20 = 157,395.60 : x
  2. Step 2: Convert to fraction form
    284,727.60/392,907.20 = 157,395.60/x
  3. Step 3: Cross multiply
    284,727.60x = 392,907.20 × 157,395.60
  4. Step 4: Simplify right side
    284,727.60x = 61,841,864,488.32
  5. Step 5: Solve for x
    x = 61,841,864,488.32/284,727.60
  6. Step 6: Final answer
    x = 217,196.59

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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.