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Finding the Fourth Proportional to 421,572.64, 632,607.90 and 155,518.96

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Solution

The fourth proportional to 421,572.64, 632,607.90 and 155,518.96 is: 233,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,572.64 : 632,607.90 = 155,518.96 : x
  2. Step 2: Convert to fraction form
    421,572.64/632,607.90 = 155,518.96/x
  3. Step 3: Cross multiply
    421,572.64x = 632,607.90 × 155,518.96
  4. Step 4: Simplify right side
    421,572.64x = 98,382,522,695.78
  5. Step 5: Solve for x
    x = 98,382,522,695.78/421,572.64
  6. Step 6: Final answer
    x = 233,370.27

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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.