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Finding the Fourth Proportional to 310,069.40, 465,104.10 and 220,839.80

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Solution

The fourth proportional to 310,069.40, 465,104.10 and 220,839.80 is: 331,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,069.40 : 465,104.10 = 220,839.80 : x
  2. Step 2: Convert to fraction form
    310,069.40/465,104.10 = 220,839.80/x
  3. Step 3: Cross multiply
    310,069.40x = 465,104.10 × 220,839.80
  4. Step 4: Simplify right side
    310,069.40x = 102,713,496,423.18
  5. Step 5: Solve for x
    x = 102,713,496,423.18/310,069.40
  6. Step 6: Final answer
    x = 331,259.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.