Home / 387,951,315.29-582,003,632.76-142,310,230.91

Finding the Fourth Proportional to 387,951,315.29, 582,003,632.76 and 142,310,230.91

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Solution

The fourth proportional to 387,951,315.29, 582,003,632.76 and 142,310,230.91 is: 213,493,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,951,315.29 : 582,003,632.76 = 142,310,230.91 : x
  2. Step 2: Convert to fraction form
    387,951,315.29/582,003,632.76 = 142,310,230.91/x
  3. Step 3: Cross multiply
    387,951,315.29x = 582,003,632.76 × 142,310,230.91
  4. Step 4: Simplify right side
    387,951,315.29x = 82,825,071,369,989,440
  5. Step 5: Solve for x
    x = 82,825,071,369,989,440/387,951,315.29
  6. Step 6: Final answer
    x = 213,493,467.11

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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.