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Finding the Fourth Proportional to 485,305.71, 727,960.45 and 148,345.06

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Solution

The fourth proportional to 485,305.71, 727,960.45 and 148,345.06 is: 222,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,305.71 : 727,960.45 = 148,345.06 : x
  2. Step 2: Convert to fraction form
    485,305.71/727,960.45 = 148,345.06/x
  3. Step 3: Cross multiply
    485,305.71x = 727,960.45 × 148,345.06
  4. Step 4: Simplify right side
    485,305.71x = 107,989,334,998.41
  5. Step 5: Solve for x
    x = 107,989,334,998.41/485,305.71
  6. Step 6: Final answer
    x = 222,518.16

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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.