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Finding the Fourth Proportional to 212,577.57, 318,911.33 and 70,414.79

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Solution

The fourth proportional to 212,577.57, 318,911.33 and 70,414.79 is: 105,637.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,577.57 : 318,911.33 = 70,414.79 : x
  2. Step 2: Convert to fraction form
    212,577.57/318,911.33 = 70,414.79/x
  3. Step 3: Cross multiply
    212,577.57x = 318,911.33 × 70,414.79
  4. Step 4: Simplify right side
    212,577.57x = 22,456,074,330.57
  5. Step 5: Solve for x
    x = 22,456,074,330.57/212,577.57
  6. Step 6: Final answer
    x = 105,637.09

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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.