Home / 211,326.52-291,638.64-120,683.20

Finding the Fourth Proportional to 211,326.52, 291,638.64 and 120,683.20

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Solution

The fourth proportional to 211,326.52, 291,638.64 and 120,683.20 is: 166,547.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,326.52 : 291,638.64 = 120,683.20 : x
  2. Step 2: Convert to fraction form
    211,326.52/291,638.64 = 120,683.20/x
  3. Step 3: Cross multiply
    211,326.52x = 291,638.64 × 120,683.20
  4. Step 4: Simplify right side
    211,326.52x = 35,195,884,318.85
  5. Step 5: Solve for x
    x = 35,195,884,318.85/211,326.52
  6. Step 6: Final answer
    x = 166,547.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.