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Finding the Fourth Proportional to 402,176.94, 555,010.85 and 220,905.62

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Solution

The fourth proportional to 402,176.94, 555,010.85 and 220,905.62 is: 304,853.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,176.94 : 555,010.85 = 220,905.62 : x
  2. Step 2: Convert to fraction form
    402,176.94/555,010.85 = 220,905.62/x
  3. Step 3: Cross multiply
    402,176.94x = 555,010.85 × 220,905.62
  4. Step 4: Simplify right side
    402,176.94x = 122,605,015,925.98
  5. Step 5: Solve for x
    x = 122,605,015,925.98/402,176.94
  6. Step 6: Final answer
    x = 304,853.42

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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.