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Finding the Fourth Proportional to 386,400.61, 532,616.72 and 304,595.45

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Solution

The fourth proportional to 386,400.61, 532,616.72 and 304,595.45 is: 419,856.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,400.61 : 532,616.72 = 304,595.45 : x
  2. Step 2: Convert to fraction form
    386,400.61/532,616.72 = 304,595.45/x
  3. Step 3: Cross multiply
    386,400.61x = 532,616.72 × 304,595.45
  4. Step 4: Simplify right side
    386,400.61x = 162,232,629,505.92
  5. Step 5: Solve for x
    x = 162,232,629,505.92/386,400.61
  6. Step 6: Final answer
    x = 419,856.04

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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.