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Finding the Fourth Proportional to 372,129.40, 558,194.10 and 185,505.40

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Solution

The fourth proportional to 372,129.40, 558,194.10 and 185,505.40 is: 278,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,129.40 : 558,194.10 = 185,505.40 : x
  2. Step 2: Convert to fraction form
    372,129.40/558,194.10 = 185,505.40/x
  3. Step 3: Cross multiply
    372,129.40x = 558,194.10 × 185,505.40
  4. Step 4: Simplify right side
    372,129.40x = 103,548,019,798.14
  5. Step 5: Solve for x
    x = 103,548,019,798.14/372,129.40
  6. Step 6: Final answer
    x = 278,258.10

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1.5x scale

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.