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Finding the Fourth Proportional to 284,262.21, 392,280.76 and 156,936.89

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Solution

The fourth proportional to 284,262.21, 392,280.76 and 156,936.89 is: 216,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,262.21 : 392,280.76 = 156,936.89 : x
  2. Step 2: Convert to fraction form
    284,262.21/392,280.76 = 156,936.89/x
  3. Step 3: Cross multiply
    284,262.21x = 392,280.76 × 156,936.89
  4. Step 4: Simplify right side
    284,262.21x = 61,563,319,735.15
  5. Step 5: Solve for x
    x = 61,563,319,735.15/284,262.21
  6. Step 6: Final answer
    x = 216,572.30

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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.