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Finding the Fourth Proportional to 243,637.76, 365,641.28 and 103,494.72

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Solution

The fourth proportional to 243,637.76, 365,641.28 and 103,494.72 is: 155,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,637.76 : 365,641.28 = 103,494.72 : x
  2. Step 2: Convert to fraction form
    243,637.76/365,641.28 = 103,494.72/x
  3. Step 3: Cross multiply
    243,637.76x = 365,641.28 × 103,494.72
  4. Step 4: Simplify right side
    243,637.76x = 37,841,941,894.04
  5. Step 5: Solve for x
    x = 37,841,941,894.04/243,637.76
  6. Step 6: Final answer
    x = 155,320.51

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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.