Home / 428,730.12-591,683.04-237,805.20

Finding the Fourth Proportional to 428,730.12, 591,683.04 and 237,805.20

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Solution

The fourth proportional to 428,730.12, 591,683.04 and 237,805.20 is: 328,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,730.12 : 591,683.04 = 237,805.20 : x
  2. Step 2: Convert to fraction form
    428,730.12/591,683.04 = 237,805.20/x
  3. Step 3: Cross multiply
    428,730.12x = 591,683.04 × 237,805.20
  4. Step 4: Simplify right side
    428,730.12x = 140,705,303,663.81
  5. Step 5: Solve for x
    x = 140,705,303,663.81/428,730.12
  6. Step 6: Final answer
    x = 328,190.85

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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.