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Finding the Fourth Proportional to 261,007.56, 391,511.58 and 64,015.56

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Solution

The fourth proportional to 261,007.56, 391,511.58 and 64,015.56 is: 96,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,007.56 : 391,511.58 = 64,015.56 : x
  2. Step 2: Convert to fraction form
    261,007.56/391,511.58 = 64,015.56/x
  3. Step 3: Cross multiply
    261,007.56x = 391,511.58 × 64,015.56
  4. Step 4: Simplify right side
    261,007.56x = 25,062,833,040.18
  5. Step 5: Solve for x
    x = 25,062,833,040.18/261,007.56
  6. Step 6: Final answer
    x = 96,023.40

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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.