Home / 258,005.10-387,007.65-156,965.70

Finding the Fourth Proportional to 258,005.10, 387,007.65 and 156,965.70

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Solution

The fourth proportional to 258,005.10, 387,007.65 and 156,965.70 is: 235,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,005.10 : 387,007.65 = 156,965.70 : x
  2. Step 2: Convert to fraction form
    258,005.10/387,007.65 = 156,965.70/x
  3. Step 3: Cross multiply
    258,005.10x = 387,007.65 × 156,965.70
  4. Step 4: Simplify right side
    258,005.10x = 60,746,926,687.61
  5. Step 5: Solve for x
    x = 60,746,926,687.61/258,005.10
  6. Step 6: Final answer
    x = 235,448.55

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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.