Home / 210,869.30-290,992.40-120,254.46

Finding the Fourth Proportional to 210,869.30, 290,992.40 and 120,254.46

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Solution

The fourth proportional to 210,869.30, 290,992.40 and 120,254.46 is: 165,947.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,869.30 : 290,992.40 = 120,254.46 : x
  2. Step 2: Convert to fraction form
    210,869.30/290,992.40 = 120,254.46/x
  3. Step 3: Cross multiply
    210,869.30x = 290,992.40 × 120,254.46
  4. Step 4: Simplify right side
    210,869.30x = 34,993,133,926.10
  5. Step 5: Solve for x
    x = 34,993,133,926.10/210,869.30
  6. Step 6: Final answer
    x = 165,947.03

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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.