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Finding the Fourth Proportional to 284,078.76, 392,017.23 and 156,752.70

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Solution

The fourth proportional to 284,078.76, 392,017.23 and 156,752.70 is: 216,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,078.76 : 392,017.23 = 156,752.70 : x
  2. Step 2: Convert to fraction form
    284,078.76/392,017.23 = 156,752.70/x
  3. Step 3: Cross multiply
    284,078.76x = 392,017.23 × 156,752.70
  4. Step 4: Simplify right side
    284,078.76x = 61,449,759,249.02
  5. Step 5: Solve for x
    x = 61,449,759,249.02/284,078.76
  6. Step 6: Final answer
    x = 216,312.40

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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.