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Finding the Fourth Proportional to 387,345.41, 581,051.59 and 106,862.66

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Solution

The fourth proportional to 387,345.41, 581,051.59 and 106,862.66 is: 160,303.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,345.41 : 581,051.59 = 106,862.66 : x
  2. Step 2: Convert to fraction form
    387,345.41/581,051.59 = 106,862.66/x
  3. Step 3: Cross multiply
    387,345.41x = 581,051.59 × 106,862.66
  4. Step 4: Simplify right side
    387,345.41x = 62,092,718,504.63
  5. Step 5: Solve for x
    x = 62,092,718,504.63/387,345.41
  6. Step 6: Final answer
    x = 160,303.23

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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.