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Finding the Fourth Proportional to 247,335.30, 370,565.55 and 209,718.90

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Solution

The fourth proportional to 247,335.30, 370,565.55 and 209,718.90 is: 314,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,335.30 : 370,565.55 = 209,718.90 : x
  2. Step 2: Convert to fraction form
    247,335.30/370,565.55 = 209,718.90/x
  3. Step 3: Cross multiply
    247,335.30x = 370,565.55 × 209,718.90
  4. Step 4: Simplify right side
    247,335.30x = 77,714,599,523.90
  5. Step 5: Solve for x
    x = 77,714,599,523.90/247,335.30
  6. Step 6: Final answer
    x = 314,207.47

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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.