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Finding the Fourth Proportional to 356,275, 534,645.78 and 134,659

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Solution

The fourth proportional to 356,275, 534,645.78 and 134,659 is: 202,076.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,275 : 534,645.78 = 134,659 : x
  2. Step 2: Convert to fraction form
    356,275/534,645.78 = 134,659/x
  3. Step 3: Cross multiply
    356,275x = 534,645.78 × 134,659
  4. Step 4: Simplify right side
    356,275x = 71,994,866,089.02
  5. Step 5: Solve for x
    x = 71,994,866,089.02/356,275
  6. Step 6: Final answer
    x = 202,076.67

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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.