Home / 428,920.20-591,980.94-237,995.10

Finding the Fourth Proportional to 428,920.20, 591,980.94 and 237,995.10

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Solution

The fourth proportional to 428,920.20, 591,980.94 and 237,995.10 is: 328,472.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,920.20 : 591,980.94 = 237,995.10 : x
  2. Step 2: Convert to fraction form
    428,920.20/591,980.94 = 237,995.10/x
  3. Step 3: Cross multiply
    428,920.20x = 591,980.94 × 237,995.10
  4. Step 4: Simplify right side
    428,920.20x = 140,888,563,013.39
  5. Step 5: Solve for x
    x = 140,888,563,013.39/428,920.20
  6. Step 6: Final answer
    x = 328,472.67

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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.