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Finding the Fourth Proportional to 387,334.61, 533,958.42 and 270,685.92

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Solution

The fourth proportional to 387,334.61, 533,958.42 and 270,685.92 is: 373,152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,334.61 : 533,958.42 = 270,685.92 : x
  2. Step 2: Convert to fraction form
    387,334.61/533,958.42 = 270,685.92/x
  3. Step 3: Cross multiply
    387,334.61x = 533,958.42 × 270,685.92
  4. Step 4: Simplify right side
    387,334.61x = 144,535,026,159.45
  5. Step 5: Solve for x
    x = 144,535,026,159.45/387,334.61
  6. Step 6: Final answer
    x = 373,152.88

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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.