Home / 211,637.38-317,465.80-53,867.20

Finding the Fourth Proportional to 211,637.38, 317,465.80 and 53,867.20

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Solution

The fourth proportional to 211,637.38, 317,465.80 and 53,867.20 is: 80,803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,637.38 : 317,465.80 = 53,867.20 : x
  2. Step 2: Convert to fraction form
    211,637.38/317,465.80 = 53,867.20/x
  3. Step 3: Cross multiply
    211,637.38x = 317,465.80 × 53,867.20
  4. Step 4: Simplify right side
    211,637.38x = 17,100,993,741.76
  5. Step 5: Solve for x
    x = 17,100,993,741.76/211,637.38
  6. Step 6: Final answer
    x = 80,803.28

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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.