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Finding the Fourth Proportional to 421,010.32, 631,764.56 and 154,957.68

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Solution

The fourth proportional to 421,010.32, 631,764.56 and 154,957.68 is: 232,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,010.32 : 631,764.56 = 154,957.68 : x
  2. Step 2: Convert to fraction form
    421,010.32/631,764.56 = 154,957.68/x
  3. Step 3: Cross multiply
    421,010.32x = 631,764.56 × 154,957.68
  4. Step 4: Simplify right side
    421,010.32x = 97,896,770,523.82
  5. Step 5: Solve for x
    x = 97,896,770,523.82/421,010.32
  6. Step 6: Final answer
    x = 232,528.20

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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.