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Finding the Fourth Proportional to 402,253.20, 555,113.04 and 220,968.80

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Solution

The fourth proportional to 402,253.20, 555,113.04 and 220,968.80 is: 304,938.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,253.20 : 555,113.04 = 220,968.80 : x
  2. Step 2: Convert to fraction form
    402,253.20/555,113.04 = 220,968.80/x
  3. Step 3: Cross multiply
    402,253.20x = 555,113.04 × 220,968.80
  4. Step 4: Simplify right side
    402,253.20x = 122,662,662,313.15
  5. Step 5: Solve for x
    x = 122,662,662,313.15/402,253.20
  6. Step 6: Final answer
    x = 304,938.93

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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.