Home / 428,312.25-591,071.60-234,689.20

Finding the Fourth Proportional to 428,312.25, 591,071.60 and 234,689.20

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Solution

The fourth proportional to 428,312.25, 591,071.60 and 234,689.20 is: 323,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,312.25 : 591,071.60 = 234,689.20 : x
  2. Step 2: Convert to fraction form
    428,312.25/591,071.60 = 234,689.20/x
  3. Step 3: Cross multiply
    428,312.25x = 591,071.60 × 234,689.20
  4. Step 4: Simplify right side
    428,312.25x = 138,718,116,817.92
  5. Step 5: Solve for x
    x = 138,718,116,817.92/428,312.25
  6. Step 6: Final answer
    x = 323,871.47

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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.