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Finding the Fourth Proportional to 412,222.40, 618,328.60 and 232,321.40

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Solution

The fourth proportional to 412,222.40, 618,328.60 and 232,321.40 is: 348,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,222.40 : 618,328.60 = 232,321.40 : x
  2. Step 2: Convert to fraction form
    412,222.40/618,328.60 = 232,321.40/x
  3. Step 3: Cross multiply
    412,222.40x = 618,328.60 × 232,321.40
  4. Step 4: Simplify right side
    412,222.40x = 143,650,966,012.04
  5. Step 5: Solve for x
    x = 143,650,966,012.04/412,222.40
  6. Step 6: Final answer
    x = 348,479.28

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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.