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Finding the Fourth Proportional to 218,833.56, 302,018.76 and 123,370.20

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Solution

The fourth proportional to 218,833.56, 302,018.76 and 123,370.20 is: 170,266.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,833.56 : 302,018.76 = 123,370.20 : x
  2. Step 2: Convert to fraction form
    218,833.56/302,018.76 = 123,370.20/x
  3. Step 3: Cross multiply
    218,833.56x = 302,018.76 × 123,370.20
  4. Step 4: Simplify right side
    218,833.56x = 37,260,114,824.95
  5. Step 5: Solve for x
    x = 37,260,114,824.95/218,833.56
  6. Step 6: Final answer
    x = 170,266.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.