Home / 431,146,145.40-646,719,218.10-158,460,487.80

Finding the Fourth Proportional to 431,146,145.40, 646,719,218.10 and 158,460,487.80

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Solution

The fourth proportional to 431,146,145.40, 646,719,218.10 and 158,460,487.80 is: 237,690,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,146,145.40 : 646,719,218.10 = 158,460,487.80 : x
  2. Step 2: Convert to fraction form
    431,146,145.40/646,719,218.10 = 158,460,487.80/x
  3. Step 3: Cross multiply
    431,146,145.40x = 646,719,218.10 × 158,460,487.80
  4. Step 4: Simplify right side
    431,146,145.40x = 102,479,442,769,760,608
  5. Step 5: Solve for x
    x = 102,479,442,769,760,608/431,146,145.40
  6. Step 6: Final answer
    x = 237,690,731.70

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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.