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Finding the Fourth Proportional to 280,240.80, 386,737.92 and 152,921.76

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Solution

The fourth proportional to 280,240.80, 386,737.92 and 152,921.76 is: 211,035.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,240.80 : 386,737.92 = 152,921.76 : x
  2. Step 2: Convert to fraction form
    280,240.80/386,737.92 = 152,921.76/x
  3. Step 3: Cross multiply
    280,240.80x = 386,737.92 × 152,921.76
  4. Step 4: Simplify right side
    280,240.80x = 59,140,643,385.14
  5. Step 5: Solve for x
    x = 59,140,643,385.14/280,240.80
  6. Step 6: Final answer
    x = 211,035.09

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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.