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Finding the Fourth Proportional to 247,222.80, 370,834.20 and 217,698.30

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Solution

The fourth proportional to 247,222.80, 370,834.20 and 217,698.30 is: 326,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,222.80 : 370,834.20 = 217,698.30 : x
  2. Step 2: Convert to fraction form
    247,222.80/370,834.20 = 217,698.30/x
  3. Step 3: Cross multiply
    247,222.80x = 370,834.20 × 217,698.30
  4. Step 4: Simplify right side
    247,222.80x = 80,729,974,921.86
  5. Step 5: Solve for x
    x = 80,729,974,921.86/247,222.80
  6. Step 6: Final answer
    x = 326,547.45

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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.