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Finding the Fourth Proportional to 472,259.70, 708,562.35 and 191,805.30

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Solution

The fourth proportional to 472,259.70, 708,562.35 and 191,805.30 is: 287,778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,259.70 : 708,562.35 = 191,805.30 : x
  2. Step 2: Convert to fraction form
    472,259.70/708,562.35 = 191,805.30/x
  3. Step 3: Cross multiply
    472,259.70x = 708,562.35 × 191,805.30
  4. Step 4: Simplify right side
    472,259.70x = 135,906,014,110.46
  5. Step 5: Solve for x
    x = 135,906,014,110.46/472,259.70
  6. Step 6: Final answer
    x = 287,778.13

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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.