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Finding the Fourth Proportional to 243,720.71, 365,760.72 and 115,637.52

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Solution

The fourth proportional to 243,720.71, 365,760.72 and 115,637.52 is: 173,541.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,720.71 : 365,760.72 = 115,637.52 : x
  2. Step 2: Convert to fraction form
    243,720.71/365,760.72 = 115,637.52/x
  3. Step 3: Cross multiply
    243,720.71x = 365,760.72 × 115,637.52
  4. Step 4: Simplify right side
    243,720.71x = 42,295,662,574.21
  5. Step 5: Solve for x
    x = 42,295,662,574.21/243,720.71
  6. Step 6: Final answer
    x = 173,541.52

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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.