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Finding the Fourth Proportional to 284,305.04, 392,330.48 and 156,977.92

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Solution

The fourth proportional to 284,305.04, 392,330.48 and 156,977.92 is: 216,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,305.04 : 392,330.48 = 156,977.92 : x
  2. Step 2: Convert to fraction form
    284,305.04/392,330.48 = 156,977.92/x
  3. Step 3: Cross multiply
    284,305.04x = 392,330.48 × 156,977.92
  4. Step 4: Simplify right side
    284,305.04x = 61,587,222,703.00
  5. Step 5: Solve for x
    x = 61,587,222,703.00/284,305.04
  6. Step 6: Final answer
    x = 216,623.75

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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.