Home / 421,569.20-632,135.10-155,192.60

Finding the Fourth Proportional to 421,569.20, 632,135.10 and 155,192.60

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Solution

The fourth proportional to 421,569.20, 632,135.10 and 155,192.60 is: 232,708.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,569.20 : 632,135.10 = 155,192.60 : x
  2. Step 2: Convert to fraction form
    421,569.20/632,135.10 = 155,192.60/x
  3. Step 3: Cross multiply
    421,569.20x = 632,135.10 × 155,192.60
  4. Step 4: Simplify right side
    421,569.20x = 98,102,689,720.26
  5. Step 5: Solve for x
    x = 98,102,689,720.26/421,569.20
  6. Step 6: Final answer
    x = 232,708.39

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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.