Home / 421,074,902.40-631,654,562.70-144,689,715.60

Finding the Fourth Proportional to 421,074,902.40, 631,654,562.70 and 144,689,715.60

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Solution

The fourth proportional to 421,074,902.40, 631,654,562.70 and 144,689,715.60 is: 217,049,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,074,902.40 : 631,654,562.70 = 144,689,715.60 : x
  2. Step 2: Convert to fraction form
    421,074,902.40/631,654,562.70 = 144,689,715.60/x
  3. Step 3: Cross multiply
    421,074,902.40x = 631,654,562.70 × 144,689,715.60
  4. Step 4: Simplify right side
    421,074,902.40x = 91,393,919,034,505,376
  5. Step 5: Solve for x
    x = 91,393,919,034,505,376/421,074,902.40
  6. Step 6: Final answer
    x = 217,049,077.29

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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.