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Finding the Fourth Proportional to 435,237,319.20, 652,855,978.80 and 112,121,191.20

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Solution

The fourth proportional to 435,237,319.20, 652,855,978.80 and 112,121,191.20 is: 168,181,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,237,319.20 : 652,855,978.80 = 112,121,191.20 : x
  2. Step 2: Convert to fraction form
    435,237,319.20/652,855,978.80 = 112,121,191.20/x
  3. Step 3: Cross multiply
    435,237,319.20x = 652,855,978.80 × 112,121,191.20
  4. Step 4: Simplify right side
    435,237,319.20x = 73,198,990,025,097,936
  5. Step 5: Solve for x
    x = 73,198,990,025,097,936/435,237,319.20
  6. Step 6: Final answer
    x = 168,181,786.80

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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.