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Finding the Fourth Proportional to 357,079.08, 535,616.19 and 90,837.21

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Solution

The fourth proportional to 357,079.08, 535,616.19 and 90,837.21 is: 136,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,079.08 : 535,616.19 = 90,837.21 : x
  2. Step 2: Convert to fraction form
    357,079.08/535,616.19 = 90,837.21/x
  3. Step 3: Cross multiply
    357,079.08x = 535,616.19 × 90,837.21
  4. Step 4: Simplify right side
    357,079.08x = 48,653,880,330.43
  5. Step 5: Solve for x
    x = 48,653,880,330.43/357,079.08
  6. Step 6: Final answer
    x = 136,255.20

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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.