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Finding the Fourth Proportional to 223,349.28, 334,742.13 and 90,155.40

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Solution

The fourth proportional to 223,349.28, 334,742.13 and 90,155.40 is: 135,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,349.28 : 334,742.13 = 90,155.40 : x
  2. Step 2: Convert to fraction form
    223,349.28/334,742.13 = 90,155.40/x
  3. Step 3: Cross multiply
    223,349.28x = 334,742.13 × 90,155.40
  4. Step 4: Simplify right side
    223,349.28x = 30,178,810,627.00
  5. Step 5: Solve for x
    x = 30,178,810,627.00/223,349.28
  6. Step 6: Final answer
    x = 135,119.35

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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.