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Finding the Fourth Proportional to 280,813.77, 387,505.08 and 159,952.86

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Solution

The fourth proportional to 280,813.77, 387,505.08 and 159,952.86 is: 220,724.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,813.77 : 387,505.08 = 159,952.86 : x
  2. Step 2: Convert to fraction form
    280,813.77/387,505.08 = 159,952.86/x
  3. Step 3: Cross multiply
    280,813.77x = 387,505.08 × 159,952.86
  4. Step 4: Simplify right side
    280,813.77x = 61,982,545,810.53
  5. Step 5: Solve for x
    x = 61,982,545,810.53/280,813.77
  6. Step 6: Final answer
    x = 220,724.74

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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.