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Finding the Fourth Proportional to 247,344.80, 370,579.80 and 209,728.40

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Solution

The fourth proportional to 247,344.80, 370,579.80 and 209,728.40 is: 314,221.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,344.80 : 370,579.80 = 209,728.40 : x
  2. Step 2: Convert to fraction form
    247,344.80/370,579.80 = 209,728.40/x
  3. Step 3: Cross multiply
    247,344.80x = 370,579.80 × 209,728.40
  4. Step 4: Simplify right side
    247,344.80x = 77,721,108,526.32
  5. Step 5: Solve for x
    x = 77,721,108,526.32/247,344.80
  6. Step 6: Final answer
    x = 314,221.72

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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.