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Finding the Fourth Proportional to 421,884.79, 632,727.46 and 155,500.63

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Solution

The fourth proportional to 421,884.79, 632,727.46 and 155,500.63 is: 233,214.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,884.79 : 632,727.46 = 155,500.63 : x
  2. Step 2: Convert to fraction form
    421,884.79/632,727.46 = 155,500.63/x
  3. Step 3: Cross multiply
    421,884.79x = 632,727.46 × 155,500.63
  4. Step 4: Simplify right side
    421,884.79x = 98,389,518,648.30
  5. Step 5: Solve for x
    x = 98,389,518,648.30/421,884.79
  6. Step 6: Final answer
    x = 233,214.19

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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.