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Finding the Fourth Proportional to 250,407.56, 375,648.20 and 72,891.20

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Solution

The fourth proportional to 250,407.56, 375,648.20 and 72,891.20 is: 109,347.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,407.56 : 375,648.20 = 72,891.20 : x
  2. Step 2: Convert to fraction form
    250,407.56/375,648.20 = 72,891.20/x
  3. Step 3: Cross multiply
    250,407.56x = 375,648.20 × 72,891.20
  4. Step 4: Simplify right side
    250,407.56x = 27,381,448,075.84
  5. Step 5: Solve for x
    x = 27,381,448,075.84/250,407.56
  6. Step 6: Final answer
    x = 109,347.53

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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.