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Finding the Fourth Proportional to 238,445.64, 328,960.44 and 153,612

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Solution

The fourth proportional to 238,445.64, 328,960.44 and 153,612 is: 211,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,445.64 : 328,960.44 = 153,612 : x
  2. Step 2: Convert to fraction form
    238,445.64/328,960.44 = 153,612/x
  3. Step 3: Cross multiply
    238,445.64x = 328,960.44 × 153,612
  4. Step 4: Simplify right side
    238,445.64x = 50,532,271,109.28
  5. Step 5: Solve for x
    x = 50,532,271,109.28/238,445.64
  6. Step 6: Final answer
    x = 211,923.65

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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.