Home / 211,141.08-291,377.10-120,509.28

Finding the Fourth Proportional to 211,141.08, 291,377.10 and 120,509.28

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Solution

The fourth proportional to 211,141.08, 291,377.10 and 120,509.28 is: 166,304.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,141.08 : 291,377.10 = 120,509.28 : x
  2. Step 2: Convert to fraction form
    211,141.08/291,377.10 = 120,509.28/x
  3. Step 3: Cross multiply
    211,141.08x = 291,377.10 × 120,509.28
  4. Step 4: Simplify right side
    211,141.08x = 35,113,644,529.49
  5. Step 5: Solve for x
    x = 35,113,644,529.49/211,141.08
  6. Step 6: Final answer
    x = 166,304.18

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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.