Home / 285,924,679.92-428,588,420.40-140,156,406

Finding the Fourth Proportional to 285,924,679.92, 428,588,420.40 and 140,156,406

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Solution

The fourth proportional to 285,924,679.92, 428,588,420.40 and 140,156,406 is: 210,088,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,924,679.92 : 428,588,420.40 = 140,156,406 : x
  2. Step 2: Convert to fraction form
    285,924,679.92/428,588,420.40 = 140,156,406/x
  3. Step 3: Cross multiply
    285,924,679.92x = 428,588,420.40 × 140,156,406
  4. Step 4: Simplify right side
    285,924,679.92x = 60,069,412,656,481,080
  5. Step 5: Solve for x
    x = 60,069,412,656,481,080/285,924,679.92
  6. Step 6: Final answer
    x = 210,088,239.58

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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.