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Finding the Fourth Proportional to 268,540.91, 370,585.98 and 153,856.65

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Solution

The fourth proportional to 268,540.91, 370,585.98 and 153,856.65 is: 212,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,540.91 : 370,585.98 = 153,856.65 : x
  2. Step 2: Convert to fraction form
    268,540.91/370,585.98 = 153,856.65/x
  3. Step 3: Cross multiply
    268,540.91x = 370,585.98 × 153,856.65
  4. Step 4: Simplify right side
    268,540.91x = 57,017,117,419.77
  5. Step 5: Solve for x
    x = 57,017,117,419.77/268,540.91
  6. Step 6: Final answer
    x = 212,321.90

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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.