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Finding the Fourth Proportional to 605,117.20, 907,675.80 and 206,208.40

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Solution

The fourth proportional to 605,117.20, 907,675.80 and 206,208.40 is: 309,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,117.20 : 907,675.80 = 206,208.40 : x
  2. Step 2: Convert to fraction form
    605,117.20/907,675.80 = 206,208.40/x
  3. Step 3: Cross multiply
    605,117.20x = 907,675.80 × 206,208.40
  4. Step 4: Simplify right side
    605,117.20x = 187,170,374,436.72
  5. Step 5: Solve for x
    x = 187,170,374,436.72/605,117.20
  6. Step 6: Final answer
    x = 309,312.60

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Similar ratio
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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.