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Finding the Fourth Proportional to 289,793,747.20, 435,194,505.60 and 153,744,851.20

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Solution

The fourth proportional to 289,793,747.20, 435,194,505.60 and 153,744,851.20 is: 230,884,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,793,747.20 : 435,194,505.60 = 153,744,851.20 : x
  2. Step 2: Convert to fraction form
    289,793,747.20/435,194,505.60 = 153,744,851.20/x
  3. Step 3: Cross multiply
    289,793,747.20x = 435,194,505.60 × 153,744,851.20
  4. Step 4: Simplify right side
    289,793,747.20x = 66,908,914,506,529,568
  5. Step 5: Solve for x
    x = 66,908,914,506,529,568/289,793,747.20
  6. Step 6: Final answer
    x = 230,884,603.80

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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.