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Finding the Fourth Proportional to 217,278.70, 325,820.85 and 98,889.10

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Solution

The fourth proportional to 217,278.70, 325,820.85 and 98,889.10 is: 148,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,278.70 : 325,820.85 = 98,889.10 : x
  2. Step 2: Convert to fraction form
    217,278.70/325,820.85 = 98,889.10/x
  3. Step 3: Cross multiply
    217,278.70x = 325,820.85 × 98,889.10
  4. Step 4: Simplify right side
    217,278.70x = 32,220,130,617.74
  5. Step 5: Solve for x
    x = 32,220,130,617.74/217,278.70
  6. Step 6: Final answer
    x = 148,289.41

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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.