Home / 372,215.20-559,705.20-311,389.60

Finding the Fourth Proportional to 372,215.20, 559,705.20 and 311,389.60

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Solution

The fourth proportional to 372,215.20, 559,705.20 and 311,389.60 is: 468,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,215.20 : 559,705.20 = 311,389.60 : x
  2. Step 2: Convert to fraction form
    372,215.20/559,705.20 = 311,389.60/x
  3. Step 3: Cross multiply
    372,215.20x = 559,705.20 × 311,389.60
  4. Step 4: Simplify right side
    372,215.20x = 174,286,378,345.92
  5. Step 5: Solve for x
    x = 174,286,378,345.92/372,215.20
  6. Step 6: Final answer
    x = 468,240.89

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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.