Home / 500,271.52-690,237.84-321,527.20

Finding the Fourth Proportional to 500,271.52, 690,237.84 and 321,527.20

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Solution

The fourth proportional to 500,271.52, 690,237.84 and 321,527.20 is: 443,619.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,271.52 : 690,237.84 = 321,527.20 : x
  2. Step 2: Convert to fraction form
    500,271.52/690,237.84 = 321,527.20/x
  3. Step 3: Cross multiply
    500,271.52x = 690,237.84 × 321,527.20
  4. Step 4: Simplify right side
    500,271.52x = 221,930,240,029.25
  5. Step 5: Solve for x
    x = 221,930,240,029.25/500,271.52
  6. Step 6: Final answer
    x = 443,619.58

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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.