Home / 211,473.09-317,203.56-78,350.40

Finding the Fourth Proportional to 211,473.09, 317,203.56 and 78,350.40

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Solution

The fourth proportional to 211,473.09, 317,203.56 and 78,350.40 is: 117,523.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,473.09 : 317,203.56 = 78,350.40 : x
  2. Step 2: Convert to fraction form
    211,473.09/317,203.56 = 78,350.40/x
  3. Step 3: Cross multiply
    211,473.09x = 317,203.56 × 78,350.40
  4. Step 4: Simplify right side
    211,473.09x = 24,853,025,807.42
  5. Step 5: Solve for x
    x = 24,853,025,807.42/211,473.09
  6. Step 6: Final answer
    x = 117,523.35

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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.