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Finding the Fourth Proportional to 417,646.40, 626,469.60 and 240,699.20

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Solution

The fourth proportional to 417,646.40, 626,469.60 and 240,699.20 is: 361,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,646.40 : 626,469.60 = 240,699.20 : x
  2. Step 2: Convert to fraction form
    417,646.40/626,469.60 = 240,699.20/x
  3. Step 3: Cross multiply
    417,646.40x = 626,469.60 × 240,699.20
  4. Step 4: Simplify right side
    417,646.40x = 150,790,731,544.32
  5. Step 5: Solve for x
    x = 150,790,731,544.32/417,646.40
  6. Step 6: Final answer
    x = 361,048.80

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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.