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Finding the Fourth Proportional to 372,130.80, 558,023.40 and 161,660.40

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Solution

The fourth proportional to 372,130.80, 558,023.40 and 161,660.40 is: 242,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,130.80 : 558,023.40 = 161,660.40 : x
  2. Step 2: Convert to fraction form
    372,130.80/558,023.40 = 161,660.40/x
  3. Step 3: Cross multiply
    372,130.80x = 558,023.40 × 161,660.40
  4. Step 4: Simplify right side
    372,130.80x = 90,210,286,053.36
  5. Step 5: Solve for x
    x = 90,210,286,053.36/372,130.80
  6. Step 6: Final answer
    x = 242,415.53

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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.