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Finding the Fourth Proportional to 578,460.80, 867,820.80 and 223,443.20

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Solution

The fourth proportional to 578,460.80, 867,820.80 and 223,443.20 is: 335,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,460.80 : 867,820.80 = 223,443.20 : x
  2. Step 2: Convert to fraction form
    578,460.80/867,820.80 = 223,443.20/x
  3. Step 3: Cross multiply
    578,460.80x = 867,820.80 × 223,443.20
  4. Step 4: Simplify right side
    578,460.80x = 193,908,656,578.56
  5. Step 5: Solve for x
    x = 193,908,656,578.56/578,460.80
  6. Step 6: Final answer
    x = 335,214.86

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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.