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Finding the Fourth Proportional to 223,838.60, 335,498.70 and 90,631.40

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Solution

The fourth proportional to 223,838.60, 335,498.70 and 90,631.40 is: 135,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,838.60 : 335,498.70 = 90,631.40 : x
  2. Step 2: Convert to fraction form
    223,838.60/335,498.70 = 90,631.40/x
  3. Step 3: Cross multiply
    223,838.60x = 335,498.70 × 90,631.40
  4. Step 4: Simplify right side
    223,838.60x = 30,406,716,879.18
  5. Step 5: Solve for x
    x = 30,406,716,879.18/223,838.60
  6. Step 6: Final answer
    x = 135,842.15

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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.