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Finding the Fourth Proportional to 218,888.60, 302,066.25 and 123,395.30

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Solution

The fourth proportional to 218,888.60, 302,066.25 and 123,395.30 is: 170,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,888.60 : 302,066.25 = 123,395.30 : x
  2. Step 2: Convert to fraction form
    218,888.60/302,066.25 = 123,395.30/x
  3. Step 3: Cross multiply
    218,888.60x = 302,066.25 × 123,395.30
  4. Step 4: Simplify right side
    218,888.60x = 37,273,555,538.63
  5. Step 5: Solve for x
    x = 37,273,555,538.63/218,888.60
  6. Step 6: Final answer
    x = 170,285.50

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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.