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Finding the Fourth Proportional to 284,160.58, 392,140.78 and 156,835.26

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Solution

The fourth proportional to 284,160.58, 392,140.78 and 156,835.26 is: 216,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,160.58 : 392,140.78 = 156,835.26 : x
  2. Step 2: Convert to fraction form
    284,160.58/392,140.78 = 156,835.26/x
  3. Step 3: Cross multiply
    284,160.58x = 392,140.78 × 156,835.26
  4. Step 4: Simplify right side
    284,160.58x = 61,501,501,187.90
  5. Step 5: Solve for x
    x = 61,501,501,187.90/284,160.58
  6. Step 6: Final answer
    x = 216,432.21

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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.