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Finding the Fourth Proportional to 357,561.32, 536,341.44 and 91,321.76

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Solution

The fourth proportional to 357,561.32, 536,341.44 and 91,321.76 is: 136,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,561.32 : 536,341.44 = 91,321.76 : x
  2. Step 2: Convert to fraction form
    357,561.32/536,341.44 = 91,321.76/x
  3. Step 3: Cross multiply
    357,561.32x = 536,341.44 × 91,321.76
  4. Step 4: Simplify right side
    357,561.32x = 48,979,644,261.73
  5. Step 5: Solve for x
    x = 48,979,644,261.73/357,561.32
  6. Step 6: Final answer
    x = 136,982.50

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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.