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Finding the Fourth Proportional to 239,803.76, 359,705.40 and 71,323.40

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Solution

The fourth proportional to 239,803.76, 359,705.40 and 71,323.40 is: 106,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,803.76 : 359,705.40 = 71,323.40 : x
  2. Step 2: Convert to fraction form
    239,803.76/359,705.40 = 71,323.40/x
  3. Step 3: Cross multiply
    239,803.76x = 359,705.40 × 71,323.40
  4. Step 4: Simplify right side
    239,803.76x = 25,655,412,126.36
  5. Step 5: Solve for x
    x = 25,655,412,126.36/239,803.76
  6. Step 6: Final answer
    x = 106,985.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.