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Finding the Fourth Proportional to 387,573.92, 534,848.64 and 217,807.64

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Solution

The fourth proportional to 387,573.92, 534,848.64 and 217,807.64 is: 300,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,573.92 : 534,848.64 = 217,807.64 : x
  2. Step 2: Convert to fraction form
    387,573.92/534,848.64 = 217,807.64/x
  3. Step 3: Cross multiply
    387,573.92x = 534,848.64 × 217,807.64
  4. Step 4: Simplify right side
    387,573.92x = 116,494,120,035.61
  5. Step 5: Solve for x
    x = 116,494,120,035.61/387,573.92
  6. Step 6: Final answer
    x = 300,572.65

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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.