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Finding the Fourth Proportional to 261,570.97, 392,361.01 and 72,030.36

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Solution

The fourth proportional to 261,570.97, 392,361.01 and 72,030.36 is: 108,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,570.97 : 392,361.01 = 72,030.36 : x
  2. Step 2: Convert to fraction form
    261,570.97/392,361.01 = 72,030.36/x
  3. Step 3: Cross multiply
    261,570.97x = 392,361.01 × 72,030.36
  4. Step 4: Simplify right side
    261,570.97x = 28,261,906,496.71
  5. Step 5: Solve for x
    x = 28,261,906,496.71/261,570.97
  6. Step 6: Final answer
    x = 108,046.80

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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.