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Finding the Fourth Proportional to 403,980.76, 605,301.52 and 245,730.52

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Solution

The fourth proportional to 403,980.76, 605,301.52 and 245,730.52 is: 368,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,980.76 : 605,301.52 = 245,730.52 : x
  2. Step 2: Convert to fraction form
    403,980.76/605,301.52 = 245,730.52/x
  3. Step 3: Cross multiply
    403,980.76x = 605,301.52 × 245,730.52
  4. Step 4: Simplify right side
    403,980.76x = 148,741,057,266.39
  5. Step 5: Solve for x
    x = 148,741,057,266.39/403,980.76
  6. Step 6: Final answer
    x = 368,188.47

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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.