Home / 211,328.52-291,641.40-120,685.20

Finding the Fourth Proportional to 211,328.52, 291,641.40 and 120,685.20

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Solution

The fourth proportional to 211,328.52, 291,641.40 and 120,685.20 is: 166,550.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,328.52 : 291,641.40 = 120,685.20 : x
  2. Step 2: Convert to fraction form
    211,328.52/291,641.40 = 120,685.20/x
  3. Step 3: Cross multiply
    211,328.52x = 291,641.40 × 120,685.20
  4. Step 4: Simplify right side
    211,328.52x = 35,196,800,687.28
  5. Step 5: Solve for x
    x = 35,196,800,687.28/211,328.52
  6. Step 6: Final answer
    x = 166,550.17

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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.