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Finding the Fourth Proportional to 269,686.80, 402,319.80 and 262,356.42

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Solution

The fourth proportional to 269,686.80, 402,319.80 and 262,356.42 is: 391,384.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,686.80 : 402,319.80 = 262,356.42 : x
  2. Step 2: Convert to fraction form
    269,686.80/402,319.80 = 262,356.42/x
  3. Step 3: Cross multiply
    269,686.80x = 402,319.80 × 262,356.42
  4. Step 4: Simplify right side
    269,686.80x = 105,551,181,111.33
  5. Step 5: Solve for x
    x = 105,551,181,111.33/269,686.80
  6. Step 6: Final answer
    x = 391,384.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.