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Finding the Fourth Proportional to 514,644.32, 772,186.80 and 215,194.88

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Solution

The fourth proportional to 514,644.32, 772,186.80 and 215,194.88 is: 322,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,644.32 : 772,186.80 = 215,194.88 : x
  2. Step 2: Convert to fraction form
    514,644.32/772,186.80 = 215,194.88/x
  3. Step 3: Cross multiply
    514,644.32x = 772,186.80 × 215,194.88
  4. Step 4: Simplify right side
    514,644.32x = 166,170,645,763.58
  5. Step 5: Solve for x
    x = 166,170,645,763.58/514,644.32
  6. Step 6: Final answer
    x = 322,884.45

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1.5x scale

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.