Home / 391,709,392.80-587,060,204.40-238,192,490.40

Finding the Fourth Proportional to 391,709,392.80, 587,060,204.40 and 238,192,490.40

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Solution

The fourth proportional to 391,709,392.80, 587,060,204.40 and 238,192,490.40 is: 356,982,330.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,709,392.80 : 587,060,204.40 = 238,192,490.40 : x
  2. Step 2: Convert to fraction form
    391,709,392.80/587,060,204.40 = 238,192,490.40/x
  3. Step 3: Cross multiply
    391,709,392.80x = 587,060,204.40 × 238,192,490.40
  4. Step 4: Simplify right side
    391,709,392.80x = 139,833,332,100,769,040
  5. Step 5: Solve for x
    x = 139,833,332,100,769,040/391,709,392.80
  6. Step 6: Final answer
    x = 356,982,330.96

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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.