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Finding the Fourth Proportional to 391,999,797.60, 588,088,281.03 and 129,683,733.27

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Solution

The fourth proportional to 391,999,797.60, 588,088,281.03 and 129,683,733.27 is: 194,554,906.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,999,797.60 : 588,088,281.03 = 129,683,733.27 : x
  2. Step 2: Convert to fraction form
    391,999,797.60/588,088,281.03 = 129,683,733.27/x
  3. Step 3: Cross multiply
    391,999,797.60x = 588,088,281.03 × 129,683,733.27
  4. Step 4: Simplify right side
    391,999,797.60x = 76,265,483,776,307,312
  5. Step 5: Solve for x
    x = 76,265,483,776,307,312/391,999,797.60
  6. Step 6: Final answer
    x = 194,554,906.01

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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.