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Finding the Fourth Proportional to 609,382.80, 913,514.40 and 209,928.60

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Solution

The fourth proportional to 609,382.80, 913,514.40 and 209,928.60 is: 314,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,382.80 : 913,514.40 = 209,928.60 : x
  2. Step 2: Convert to fraction form
    609,382.80/913,514.40 = 209,928.60/x
  3. Step 3: Cross multiply
    609,382.80x = 913,514.40 × 209,928.60
  4. Step 4: Simplify right side
    609,382.80x = 191,772,799,071.84
  5. Step 5: Solve for x
    x = 191,772,799,071.84/609,382.80
  6. Step 6: Final answer
    x = 314,700.05

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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.