Home / 348,036.20-521,276.70-285,828.20

Finding the Fourth Proportional to 348,036.20, 521,276.70 and 285,828.20

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Solution

The fourth proportional to 348,036.20, 521,276.70 and 285,828.20 is: 428,103.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,036.20 : 521,276.70 = 285,828.20 : x
  2. Step 2: Convert to fraction form
    348,036.20/521,276.70 = 285,828.20/x
  3. Step 3: Cross multiply
    348,036.20x = 521,276.70 × 285,828.20
  4. Step 4: Simplify right side
    348,036.20x = 148,995,580,862.94
  5. Step 5: Solve for x
    x = 148,995,580,862.94/348,036.20
  6. Step 6: Final answer
    x = 428,103.69

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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.