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Finding the Fourth Proportional to 425,936,589, 638,975,479.86 and 149,516,081.88

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Solution

The fourth proportional to 425,936,589, 638,975,479.86 and 149,516,081.88 is: 224,298,904.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,936,589 : 638,975,479.86 = 149,516,081.88 : x
  2. Step 2: Convert to fraction form
    425,936,589/638,975,479.86 = 149,516,081.88/x
  3. Step 3: Cross multiply
    425,936,589x = 638,975,479.86 × 149,516,081.88
  4. Step 4: Simplify right side
    425,936,589x = 95,537,110,166,060,048
  5. Step 5: Solve for x
    x = 95,537,110,166,060,048/425,936,589
  6. Step 6: Final answer
    x = 224,298,904.19

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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.