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Finding the Fourth Proportional to 243,812.31, 336,488.90 and 136,409.55

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Solution

The fourth proportional to 243,812.31, 336,488.90 and 136,409.55 is: 188,260.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,812.31 : 336,488.90 = 136,409.55 : x
  2. Step 2: Convert to fraction form
    243,812.31/336,488.90 = 136,409.55/x
  3. Step 3: Cross multiply
    243,812.31x = 336,488.90 × 136,409.55
  4. Step 4: Simplify right side
    243,812.31x = 45,900,298,746.95
  5. Step 5: Solve for x
    x = 45,900,298,746.95/243,812.31
  6. Step 6: Final answer
    x = 188,260.79

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1.5x scale

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.