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Finding the Fourth Proportional to 218,586.55, 301,643.55 and 123,091.20

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Solution

The fourth proportional to 218,586.55, 301,643.55 and 123,091.20 is: 169,862.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,586.55 : 301,643.55 = 123,091.20 : x
  2. Step 2: Convert to fraction form
    218,586.55/301,643.55 = 123,091.20/x
  3. Step 3: Cross multiply
    218,586.55x = 301,643.55 × 123,091.20
  4. Step 4: Simplify right side
    218,586.55x = 37,129,666,541.76
  5. Step 5: Solve for x
    x = 37,129,666,541.76/218,586.55
  6. Step 6: Final answer
    x = 169,862.54

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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.