Home / 420,289.25-579,999.17-269,386.25

Finding the Fourth Proportional to 420,289.25, 579,999.17 and 269,386.25

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Solution

The fourth proportional to 420,289.25, 579,999.17 and 269,386.25 is: 371,753.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,289.25 : 579,999.17 = 269,386.25 : x
  2. Step 2: Convert to fraction form
    420,289.25/579,999.17 = 269,386.25/x
  3. Step 3: Cross multiply
    420,289.25x = 579,999.17 × 269,386.25
  4. Step 4: Simplify right side
    420,289.25x = 156,243,800,062.48
  5. Step 5: Solve for x
    x = 156,243,800,062.48/420,289.25
  6. Step 6: Final answer
    x = 371,753.03

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1.5x scale

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.