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Finding the Fourth Proportional to 576,911.90, 865,108.65 and 221,807.90

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Solution

The fourth proportional to 576,911.90, 865,108.65 and 221,807.90 is: 332,612.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,911.90 : 865,108.65 = 221,807.90 : x
  2. Step 2: Convert to fraction form
    576,911.90/865,108.65 = 221,807.90/x
  3. Step 3: Cross multiply
    576,911.90x = 865,108.65 × 221,807.90
  4. Step 4: Simplify right side
    576,911.90x = 191,887,932,928.34
  5. Step 5: Solve for x
    x = 191,887,932,928.34/576,911.90
  6. Step 6: Final answer
    x = 332,612.19

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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.