Home / 389,934,905.80-584,760,641.10-131,158,568.20

Finding the Fourth Proportional to 389,934,905.80, 584,760,641.10 and 131,158,568.20

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Solution

The fourth proportional to 389,934,905.80, 584,760,641.10 and 131,158,568.20 is: 196,690,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,934,905.80 : 584,760,641.10 = 131,158,568.20 : x
  2. Step 2: Convert to fraction form
    389,934,905.80/584,760,641.10 = 131,158,568.20/x
  3. Step 3: Cross multiply
    389,934,905.80x = 584,760,641.10 × 131,158,568.20
  4. Step 4: Simplify right side
    389,934,905.80x = 76,696,368,426,390,080
  5. Step 5: Solve for x
    x = 76,696,368,426,390,080/389,934,905.80
  6. Step 6: Final answer
    x = 196,690,184.15

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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.