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Finding the Fourth Proportional to 391,538.50, 587,307.76 and 169,922.50

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Solution

The fourth proportional to 391,538.50, 587,307.76 and 169,922.50 is: 254,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,538.50 : 587,307.76 = 169,922.50 : x
  2. Step 2: Convert to fraction form
    391,538.50/587,307.76 = 169,922.50/x
  3. Step 3: Cross multiply
    391,538.50x = 587,307.76 × 169,922.50
  4. Step 4: Simplify right side
    391,538.50x = 99,796,802,848.60
  5. Step 5: Solve for x
    x = 99,796,802,848.60/391,538.50
  6. Step 6: Final answer
    x = 254,883.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.