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Finding the Fourth Proportional to 421,713.79, 632,471.31 and 155,329.63

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Solution

The fourth proportional to 421,713.79, 632,471.31 and 155,329.63 is: 232,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,713.79 : 632,471.31 = 155,329.63 : x
  2. Step 2: Convert to fraction form
    421,713.79/632,471.31 = 155,329.63/x
  3. Step 3: Cross multiply
    421,713.79x = 632,471.31 × 155,329.63
  4. Step 4: Simplify right side
    421,713.79x = 98,241,534,567.92
  5. Step 5: Solve for x
    x = 98,241,534,567.92/421,713.79
  6. Step 6: Final answer
    x = 232,957.84

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1.5x scale

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.