Home / 386,021.02-578,391.30-273,141.76

Finding the Fourth Proportional to 386,021.02, 578,391.30 and 273,141.76

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Solution

The fourth proportional to 386,021.02, 578,391.30 and 273,141.76 is: 409,259.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,021.02 : 578,391.30 = 273,141.76 : x
  2. Step 2: Convert to fraction form
    386,021.02/578,391.30 = 273,141.76/x
  3. Step 3: Cross multiply
    386,021.02x = 578,391.30 × 273,141.76
  4. Step 4: Simplify right side
    386,021.02x = 157,982,817,650.69
  5. Step 5: Solve for x
    x = 157,982,817,650.69/386,021.02
  6. Step 6: Final answer
    x = 409,259.62

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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.