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Finding the Fourth Proportional to 576,641.35, 864,638.05 and 239,455.16

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Solution

The fourth proportional to 576,641.35, 864,638.05 and 239,455.16 is: 359,048.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,641.35 : 864,638.05 = 239,455.16 : x
  2. Step 2: Convert to fraction form
    576,641.35/864,638.05 = 239,455.16/x
  3. Step 3: Cross multiply
    576,641.35x = 864,638.05 × 239,455.16
  4. Step 4: Simplify right side
    576,641.35x = 207,042,042,604.84
  5. Step 5: Solve for x
    x = 207,042,042,604.84/576,641.35
  6. Step 6: Final answer
    x = 359,048.21

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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.