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Finding the Fourth Proportional to 202,387.59, 279,287.28 and 111,741.57

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Solution

The fourth proportional to 202,387.59, 279,287.28 and 111,741.57 is: 154,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,387.59 : 279,287.28 = 111,741.57 : x
  2. Step 2: Convert to fraction form
    202,387.59/279,287.28 = 111,741.57/x
  3. Step 3: Cross multiply
    202,387.59x = 279,287.28 × 111,741.57
  4. Step 4: Simplify right side
    202,387.59x = 31,207,999,148.23
  5. Step 5: Solve for x
    x = 31,207,999,148.23/202,387.59
  6. Step 6: Final answer
    x = 154,199.17

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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.