Home / 287,719.83-431,845.93-145,664.92

Finding the Fourth Proportional to 287,719.83, 431,845.93 and 145,664.92

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Solution

The fourth proportional to 287,719.83, 431,845.93 and 145,664.92 is: 218,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,719.83 : 431,845.93 = 145,664.92 : x
  2. Step 2: Convert to fraction form
    287,719.83/431,845.93 = 145,664.92/x
  3. Step 3: Cross multiply
    287,719.83x = 431,845.93 × 145,664.92
  4. Step 4: Simplify right side
    287,719.83x = 62,904,801,138.53
  5. Step 5: Solve for x
    x = 62,904,801,138.53/287,719.83
  6. Step 6: Final answer
    x = 218,632.14

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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.