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Finding the Fourth Proportional to 518,515.76, 715,625.88 and 292,182.32

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Solution

The fourth proportional to 518,515.76, 715,625.88 and 292,182.32 is: 403,253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,515.76 : 715,625.88 = 292,182.32 : x
  2. Step 2: Convert to fraction form
    518,515.76/715,625.88 = 292,182.32/x
  3. Step 3: Cross multiply
    518,515.76x = 715,625.88 × 292,182.32
  4. Step 4: Simplify right side
    518,515.76x = 209,093,229,870.44
  5. Step 5: Solve for x
    x = 209,093,229,870.44/518,515.76
  6. Step 6: Final answer
    x = 403,253.37

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1.5x scale

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.