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Finding the Fourth Proportional to 238,471.20, 329,018.49 and 142,943.04

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Solution

The fourth proportional to 238,471.20, 329,018.49 and 142,943.04 is: 197,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,471.20 : 329,018.49 = 142,943.04 : x
  2. Step 2: Convert to fraction form
    238,471.20/329,018.49 = 142,943.04/x
  3. Step 3: Cross multiply
    238,471.20x = 329,018.49 × 142,943.04
  4. Step 4: Simplify right side
    238,471.20x = 47,030,903,176.81
  5. Step 5: Solve for x
    x = 47,030,903,176.81/238,471.20
  6. Step 6: Final answer
    x = 197,218.38

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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.