Home / 428,289.12-591,039.36-237,305.76

Finding the Fourth Proportional to 428,289.12, 591,039.36 and 237,305.76

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Solution

The fourth proportional to 428,289.12, 591,039.36 and 237,305.76 is: 327,482.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,289.12 : 591,039.36 = 237,305.76 : x
  2. Step 2: Convert to fraction form
    428,289.12/591,039.36 = 237,305.76/x
  3. Step 3: Cross multiply
    428,289.12x = 591,039.36 × 237,305.76
  4. Step 4: Simplify right side
    428,289.12x = 140,257,044,514.71
  5. Step 5: Solve for x
    x = 140,257,044,514.71/428,289.12
  6. Step 6: Final answer
    x = 327,482.16

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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.