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Finding the Fourth Proportional to 382,010.59, 526,507.31 and 279,818.87

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Solution

The fourth proportional to 382,010.59, 526,507.31 and 279,818.87 is: 385,661.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,010.59 : 526,507.31 = 279,818.87 : x
  2. Step 2: Convert to fraction form
    382,010.59/526,507.31 = 279,818.87/x
  3. Step 3: Cross multiply
    382,010.59x = 526,507.31 × 279,818.87
  4. Step 4: Simplify right side
    382,010.59x = 147,326,678,597.95
  5. Step 5: Solve for x
    x = 147,326,678,597.95/382,010.59
  6. Step 6: Final answer
    x = 385,661.24

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1.5x scale

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.