Home / 428,721.51-591,659.31-237,730.80

Finding the Fourth Proportional to 428,721.51, 591,659.31 and 237,730.80

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Solution

The fourth proportional to 428,721.51, 591,659.31 and 237,730.80 is: 328,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,721.51 : 591,659.31 = 237,730.80 : x
  2. Step 2: Convert to fraction form
    428,721.51/591,659.31 = 237,730.80/x
  3. Step 3: Cross multiply
    428,721.51x = 591,659.31 × 237,730.80
  4. Step 4: Simplify right side
    428,721.51x = 140,655,641,093.75
  5. Step 5: Solve for x
    x = 140,655,641,093.75/428,721.51
  6. Step 6: Final answer
    x = 328,081.60

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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.