Home / 276,905.80-415,030.65-206,703.10

Finding the Fourth Proportional to 276,905.80, 415,030.65 and 206,703.10

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Solution

The fourth proportional to 276,905.80, 415,030.65 and 206,703.10 is: 309,809.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,905.80 : 415,030.65 = 206,703.10 : x
  2. Step 2: Convert to fraction form
    276,905.80/415,030.65 = 206,703.10/x
  3. Step 3: Cross multiply
    276,905.80x = 415,030.65 × 206,703.10
  4. Step 4: Simplify right side
    276,905.80x = 85,788,121,950.02
  5. Step 5: Solve for x
    x = 85,788,121,950.02/276,905.80
  6. Step 6: Final answer
    x = 309,809.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.