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Finding the Fourth Proportional to 370,978,081.20, 556,467,121.80 and 98,376,404.40

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Solution

The fourth proportional to 370,978,081.20, 556,467,121.80 and 98,376,404.40 is: 147,564,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,978,081.20 : 556,467,121.80 = 98,376,404.40 : x
  2. Step 2: Convert to fraction form
    370,978,081.20/556,467,121.80 = 98,376,404.40/x
  3. Step 3: Cross multiply
    370,978,081.20x = 556,467,121.80 × 98,376,404.40
  4. Step 4: Simplify right side
    370,978,081.20x = 54,743,234,609,500,856
  5. Step 5: Solve for x
    x = 54,743,234,609,500,856/370,978,081.20
  6. Step 6: Final answer
    x = 147,564,606.60

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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.