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Finding the Fourth Proportional to 243,873.78, 336,432.15 and 157,860.51

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Solution

The fourth proportional to 243,873.78, 336,432.15 and 157,860.51 is: 217,773.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,873.78 : 336,432.15 = 157,860.51 : x
  2. Step 2: Convert to fraction form
    243,873.78/336,432.15 = 157,860.51/x
  3. Step 3: Cross multiply
    243,873.78x = 336,432.15 × 157,860.51
  4. Step 4: Simplify right side
    243,873.78x = 53,109,350,779.40
  5. Step 5: Solve for x
    x = 53,109,350,779.40/243,873.78
  6. Step 6: Final answer
    x = 217,773.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.