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Finding the Fourth Proportional to 220,931.31, 304,866.49 and 124,127.61

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Solution

The fourth proportional to 220,931.31, 304,866.49 and 124,127.61 is: 171,285.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,931.31 : 304,866.49 = 124,127.61 : x
  2. Step 2: Convert to fraction form
    220,931.31/304,866.49 = 124,127.61/x
  3. Step 3: Cross multiply
    220,931.31x = 304,866.49 × 124,127.61
  4. Step 4: Simplify right side
    220,931.31x = 37,842,348,772.79
  5. Step 5: Solve for x
    x = 37,842,348,772.79/220,931.31
  6. Step 6: Final answer
    x = 171,285.59

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1.5x scale

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.