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Finding the Fourth Proportional to 145,894.60, 218,810.31 and 39,275.92

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Solution

The fourth proportional to 145,894.60, 218,810.31 and 39,275.92 is: 58,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,894.60 : 218,810.31 = 39,275.92 : x
  2. Step 2: Convert to fraction form
    145,894.60/218,810.31 = 39,275.92/x
  3. Step 3: Cross multiply
    145,894.60x = 218,810.31 × 39,275.92
  4. Step 4: Simplify right side
    145,894.60x = 8,593,976,230.74
  5. Step 5: Solve for x
    x = 8,593,976,230.74/145,894.60
  6. Step 6: Final answer
    x = 58,905.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.