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Finding the Fourth Proportional to 391,532.37, 540,266.52 and 238,515.06

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Solution

The fourth proportional to 391,532.37, 540,266.52 and 238,515.06 is: 329,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,532.37 : 540,266.52 = 238,515.06 : x
  2. Step 2: Convert to fraction form
    391,532.37/540,266.52 = 238,515.06/x
  3. Step 3: Cross multiply
    391,532.37x = 540,266.52 × 238,515.06
  4. Step 4: Simplify right side
    391,532.37x = 128,861,701,433.79
  5. Step 5: Solve for x
    x = 128,861,701,433.79/391,532.37
  6. Step 6: Final answer
    x = 329,121.45

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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.