Home / 428,807.12-591,782.28-237,828.56

Finding the Fourth Proportional to 428,807.12, 591,782.28 and 237,828.56

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Solution

The fourth proportional to 428,807.12, 591,782.28 and 237,828.56 is: 328,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,807.12 : 591,782.28 = 237,828.56 : x
  2. Step 2: Convert to fraction form
    428,807.12/591,782.28 = 237,828.56/x
  3. Step 3: Cross multiply
    428,807.12x = 591,782.28 × 237,828.56
  4. Step 4: Simplify right side
    428,807.12x = 140,742,727,485.92
  5. Step 5: Solve for x
    x = 140,742,727,485.92/428,807.12
  6. Step 6: Final answer
    x = 328,219.19

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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.