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Finding the Fourth Proportional to 220,762.78, 304,644.18 and 125,263.78

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Solution

The fourth proportional to 220,762.78, 304,644.18 and 125,263.78 is: 172,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,762.78 : 304,644.18 = 125,263.78 : x
  2. Step 2: Convert to fraction form
    220,762.78/304,644.18 = 125,263.78/x
  3. Step 3: Cross multiply
    220,762.78x = 304,644.18 × 125,263.78
  4. Step 4: Simplify right side
    220,762.78x = 38,160,881,541.80
  5. Step 5: Solve for x
    x = 38,160,881,541.80/220,762.78
  6. Step 6: Final answer
    x = 172,859.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.