Home / 211,356.76-317,076.56-78,238.16

Finding the Fourth Proportional to 211,356.76, 317,076.56 and 78,238.16

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Solution

The fourth proportional to 211,356.76, 317,076.56 and 78,238.16 is: 117,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,356.76 : 317,076.56 = 78,238.16 : x
  2. Step 2: Convert to fraction form
    211,356.76/317,076.56 = 78,238.16/x
  3. Step 3: Cross multiply
    211,356.76x = 317,076.56 × 78,238.16
  4. Step 4: Simplify right side
    211,356.76x = 24,807,486,633.53
  5. Step 5: Solve for x
    x = 24,807,486,633.53/211,356.76
  6. Step 6: Final answer
    x = 117,372.57

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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.