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Finding the Fourth Proportional to 431,603.64, 595,666.74 and 247,899.78

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Solution

The fourth proportional to 431,603.64, 595,666.74 and 247,899.78 is: 342,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,603.64 : 595,666.74 = 247,899.78 : x
  2. Step 2: Convert to fraction form
    431,603.64/595,666.74 = 247,899.78/x
  3. Step 3: Cross multiply
    431,603.64x = 595,666.74 × 247,899.78
  4. Step 4: Simplify right side
    431,603.64x = 147,665,653,799.32
  5. Step 5: Solve for x
    x = 147,665,653,799.32/431,603.64
  6. Step 6: Final answer
    x = 342,132.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.