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Finding the Fourth Proportional to 403,610.04, 605,100.90 and 261,154.32

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Solution

The fourth proportional to 403,610.04, 605,100.90 and 261,154.32 is: 391,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,610.04 : 605,100.90 = 261,154.32 : x
  2. Step 2: Convert to fraction form
    403,610.04/605,100.90 = 261,154.32/x
  3. Step 3: Cross multiply
    403,610.04x = 605,100.90 × 261,154.32
  4. Step 4: Simplify right side
    403,610.04x = 158,024,714,070.89
  5. Step 5: Solve for x
    x = 158,024,714,070.89/403,610.04
  6. Step 6: Final answer
    x = 391,528.20

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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.