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Finding the Fourth Proportional to 381,531.55, 526,515.59 and 238,374.63

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Solution

The fourth proportional to 381,531.55, 526,515.59 and 238,374.63 is: 328,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,531.55 : 526,515.59 = 238,374.63 : x
  2. Step 2: Convert to fraction form
    381,531.55/526,515.59 = 238,374.63/x
  3. Step 3: Cross multiply
    381,531.55x = 526,515.59 × 238,374.63
  4. Step 4: Simplify right side
    381,531.55x = 125,507,958,955.48
  5. Step 5: Solve for x
    x = 125,507,958,955.48/381,531.55
  6. Step 6: Final answer
    x = 328,958.27

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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.