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Finding the Fourth Proportional to 245,145.60, 367,718.40 and 218,707.20

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Solution

The fourth proportional to 245,145.60, 367,718.40 and 218,707.20 is: 328,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,145.60 : 367,718.40 = 218,707.20 : x
  2. Step 2: Convert to fraction form
    245,145.60/367,718.40 = 218,707.20/x
  3. Step 3: Cross multiply
    245,145.60x = 367,718.40 × 218,707.20
  4. Step 4: Simplify right side
    245,145.60x = 80,422,661,652.48
  5. Step 5: Solve for x
    x = 80,422,661,652.48/245,145.60
  6. Step 6: Final answer
    x = 328,060.80

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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.