Home / 500,269.52-690,235.08-321,525.20

Finding the Fourth Proportional to 500,269.52, 690,235.08 and 321,525.20

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Solution

The fourth proportional to 500,269.52, 690,235.08 and 321,525.20 is: 443,616.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,269.52 : 690,235.08 = 321,525.20 : x
  2. Step 2: Convert to fraction form
    500,269.52/690,235.08 = 321,525.20/x
  3. Step 3: Cross multiply
    500,269.52x = 690,235.08 × 321,525.20
  4. Step 4: Simplify right side
    500,269.52x = 221,927,972,144.02
  5. Step 5: Solve for x
    x = 221,927,972,144.02/500,269.52
  6. Step 6: Final answer
    x = 443,616.82

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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.