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Finding the Fourth Proportional to 421,008.32, 631,761.56 and 154,955.68

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Solution

The fourth proportional to 421,008.32, 631,761.56 and 154,955.68 is: 232,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,008.32 : 631,761.56 = 154,955.68 : x
  2. Step 2: Convert to fraction form
    421,008.32/631,761.56 = 154,955.68/x
  3. Step 3: Cross multiply
    421,008.32x = 631,761.56 × 154,955.68
  4. Step 4: Simplify right side
    421,008.32x = 97,895,042,127.66
  5. Step 5: Solve for x
    x = 97,895,042,127.66/421,008.32
  6. Step 6: Final answer
    x = 232,525.20

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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.