Home / 211,870.28-292,141.38-135,288.68

Finding the Fourth Proportional to 211,870.28, 292,141.38 and 135,288.68

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Solution

The fourth proportional to 211,870.28, 292,141.38 and 135,288.68 is: 186,545.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,870.28 : 292,141.38 = 135,288.68 : x
  2. Step 2: Convert to fraction form
    211,870.28/292,141.38 = 135,288.68/x
  3. Step 3: Cross multiply
    211,870.28x = 292,141.38 × 135,288.68
  4. Step 4: Simplify right side
    211,870.28x = 39,523,421,673.58
  5. Step 5: Solve for x
    x = 39,523,421,673.58/211,870.28
  6. Step 6: Final answer
    x = 186,545.38

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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.