Home / 211,028.79-291,218.95-120,384.59

Finding the Fourth Proportional to 211,028.79, 291,218.95 and 120,384.59

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Solution

The fourth proportional to 211,028.79, 291,218.95 and 120,384.59 is: 166,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,028.79 : 291,218.95 = 120,384.59 : x
  2. Step 2: Convert to fraction form
    211,028.79/291,218.95 = 120,384.59/x
  3. Step 3: Cross multiply
    211,028.79x = 291,218.95 × 120,384.59
  4. Step 4: Simplify right side
    211,028.79x = 35,058,273,895.98
  5. Step 5: Solve for x
    x = 35,058,273,895.98/211,028.79
  6. Step 6: Final answer
    x = 166,130.29

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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.