Home / 386,714,355.16-533,678,700.78-217,198,465.84

Finding the Fourth Proportional to 386,714,355.16, 533,678,700.78 and 217,198,465.84

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Solution

The fourth proportional to 386,714,355.16, 533,678,700.78 and 217,198,465.84 is: 299,741,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,714,355.16 : 533,678,700.78 = 217,198,465.84 : x
  2. Step 2: Convert to fraction form
    386,714,355.16/533,678,700.78 = 217,198,465.84/x
  3. Step 3: Cross multiply
    386,714,355.16x = 533,678,700.78 × 217,198,465.84
  4. Step 4: Simplify right side
    386,714,355.16x = 115,914,195,060,900,400
  5. Step 5: Solve for x
    x = 115,914,195,060,900,400/386,714,355.16
  6. Step 6: Final answer
    x = 299,741,122.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.