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Finding the Fourth Proportional to 387,079.94, 580,810.14 and 173,998.40

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Solution

The fourth proportional to 387,079.94, 580,810.14 and 173,998.40 is: 261,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,079.94 : 580,810.14 = 173,998.40 : x
  2. Step 2: Convert to fraction form
    387,079.94/580,810.14 = 173,998.40/x
  3. Step 3: Cross multiply
    387,079.94x = 580,810.14 × 173,998.40
  4. Step 4: Simplify right side
    387,079.94x = 101,060,032,159.73
  5. Step 5: Solve for x
    x = 101,060,032,159.73/387,079.94
  6. Step 6: Final answer
    x = 261,083.10

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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.