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Finding the Fourth Proportional to 252,751,153.60, 379,168,720.80 and 99,402,212.80

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Solution

The fourth proportional to 252,751,153.60, 379,168,720.80 and 99,402,212.80 is: 149,119,833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,751,153.60 : 379,168,720.80 = 99,402,212.80 : x
  2. Step 2: Convert to fraction form
    252,751,153.60/379,168,720.80 = 99,402,212.80/x
  3. Step 3: Cross multiply
    252,751,153.60x = 379,168,720.80 × 99,402,212.80
  4. Step 4: Simplify right side
    252,751,153.60x = 37,690,209,872,065,384
  5. Step 5: Solve for x
    x = 37,690,209,872,065,384/252,751,153.60
  6. Step 6: Final answer
    x = 149,119,833.22

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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.