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Finding the Fourth Proportional to 243,547.28, 365,355.28 and 75,081.28

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Solution

The fourth proportional to 243,547.28, 365,355.28 and 75,081.28 is: 112,632.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,547.28 : 365,355.28 = 75,081.28 : x
  2. Step 2: Convert to fraction form
    243,547.28/365,355.28 = 75,081.28/x
  3. Step 3: Cross multiply
    243,547.28x = 365,355.28 × 75,081.28
  4. Step 4: Simplify right side
    243,547.28x = 27,431,342,077.16
  5. Step 5: Solve for x
    x = 27,431,342,077.16/243,547.28
  6. Step 6: Final answer
    x = 112,632.51

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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.