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Finding the Fourth Proportional to 518,157, 776,901.51 and 218,557.44

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Solution

The fourth proportional to 518,157, 776,901.51 and 218,557.44 is: 327,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,157 : 776,901.51 = 218,557.44 : x
  2. Step 2: Convert to fraction form
    518,157/776,901.51 = 218,557.44/x
  3. Step 3: Cross multiply
    518,157x = 776,901.51 × 218,557.44
  4. Step 4: Simplify right side
    518,157x = 169,797,605,157.73
  5. Step 5: Solve for x
    x = 169,797,605,157.73/518,157
  6. Step 6: Final answer
    x = 327,695.28

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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.