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Finding the Fourth Proportional to 492,214.20, 679,256.04 and 265,859.70

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Solution

The fourth proportional to 492,214.20, 679,256.04 and 265,859.70 is: 366,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,214.20 : 679,256.04 = 265,859.70 : x
  2. Step 2: Convert to fraction form
    492,214.20/679,256.04 = 265,859.70/x
  3. Step 3: Cross multiply
    492,214.20x = 679,256.04 × 265,859.70
  4. Step 4: Simplify right side
    492,214.20x = 180,586,807,017.59
  5. Step 5: Solve for x
    x = 180,586,807,017.59/492,214.20
  6. Step 6: Final answer
    x = 366,886.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.