Home / 372,178.36-513,490.27-211,020.76

Finding the Fourth Proportional to 372,178.36, 513,490.27 and 211,020.76

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Solution

The fourth proportional to 372,178.36, 513,490.27 and 211,020.76 is: 291,142.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,178.36 : 513,490.27 = 211,020.76 : x
  2. Step 2: Convert to fraction form
    372,178.36/513,490.27 = 211,020.76/x
  3. Step 3: Cross multiply
    372,178.36x = 513,490.27 × 211,020.76
  4. Step 4: Simplify right side
    372,178.36x = 108,357,103,405.45
  5. Step 5: Solve for x
    x = 108,357,103,405.45/372,178.36
  6. Step 6: Final answer
    x = 291,142.95

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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.