Home / 393,367,016.60-542,848,216.74-217,156,459.92

Finding the Fourth Proportional to 393,367,016.60, 542,848,216.74 and 217,156,459.92

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Solution

The fourth proportional to 393,367,016.60, 542,848,216.74 and 217,156,459.92 is: 299,676,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,367,016.60 : 542,848,216.74 = 217,156,459.92 : x
  2. Step 2: Convert to fraction form
    393,367,016.60/542,848,216.74 = 217,156,459.92/x
  3. Step 3: Cross multiply
    393,367,016.60x = 542,848,216.74 × 217,156,459.92
  4. Step 4: Simplify right side
    393,367,016.60x = 117,882,997,024,709,872
  5. Step 5: Solve for x
    x = 117,882,997,024,709,872/393,367,016.60
  6. Step 6: Final answer
    x = 299,676,871.86

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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.