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Finding the Fourth Proportional to 403,503.80, 605,547.30 and 225,822.20

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Solution

The fourth proportional to 403,503.80, 605,547.30 and 225,822.20 is: 338,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,503.80 : 605,547.30 = 225,822.20 : x
  2. Step 2: Convert to fraction form
    403,503.80/605,547.30 = 225,822.20/x
  3. Step 3: Cross multiply
    403,503.80x = 605,547.30 × 225,822.20
  4. Step 4: Simplify right side
    403,503.80x = 136,746,023,490.06
  5. Step 5: Solve for x
    x = 136,746,023,490.06/403,503.80
  6. Step 6: Final answer
    x = 338,896.49

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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.