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Finding the Fourth Proportional to 403,510.80, 605,557.80 and 225,829.20

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Solution

The fourth proportional to 403,510.80, 605,557.80 and 225,829.20 is: 338,907.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,510.80 : 605,557.80 = 225,829.20 : x
  2. Step 2: Convert to fraction form
    403,510.80/605,557.80 = 225,829.20/x
  3. Step 3: Cross multiply
    403,510.80x = 605,557.80 × 225,829.20
  4. Step 4: Simplify right side
    403,510.80x = 136,752,633,527.76
  5. Step 5: Solve for x
    x = 136,752,633,527.76/403,510.80
  6. Step 6: Final answer
    x = 338,907.00

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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.