Home / 387,409.04-581,169-187,565.36

Finding the Fourth Proportional to 387,409.04, 581,169 and 187,565.36

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Solution

The fourth proportional to 387,409.04, 581,169 and 187,565.36 is: 281,374.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,409.04 : 581,169 = 187,565.36 : x
  2. Step 2: Convert to fraction form
    387,409.04/581,169 = 187,565.36/x
  3. Step 3: Cross multiply
    387,409.04x = 581,169 × 187,565.36
  4. Step 4: Simplify right side
    387,409.04x = 109,007,172,705.84
  5. Step 5: Solve for x
    x = 109,007,172,705.84/387,409.04
  6. Step 6: Final answer
    x = 281,374.88

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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.