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Finding the Fourth Proportional to 193,479.60, 290,363.40 and 99,937.20

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Solution

The fourth proportional to 193,479.60, 290,363.40 and 99,937.20 is: 149,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,479.60 : 290,363.40 = 99,937.20 : x
  2. Step 2: Convert to fraction form
    193,479.60/290,363.40 = 99,937.20/x
  3. Step 3: Cross multiply
    193,479.60x = 290,363.40 × 99,937.20
  4. Step 4: Simplify right side
    193,479.60x = 29,018,105,178.48
  5. Step 5: Solve for x
    x = 29,018,105,178.48/193,479.60
  6. Step 6: Final answer
    x = 149,980.18

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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.