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Finding the Fourth Proportional to 539,775.52, 809,664.30 and 140,415.65

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Solution

The fourth proportional to 539,775.52, 809,664.30 and 140,415.65 is: 210,623.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,775.52 : 809,664.30 = 140,415.65 : x
  2. Step 2: Convert to fraction form
    539,775.52/809,664.30 = 140,415.65/x
  3. Step 3: Cross multiply
    539,775.52x = 809,664.30 × 140,415.65
  4. Step 4: Simplify right side
    539,775.52x = 113,689,538,966.30
  5. Step 5: Solve for x
    x = 113,689,538,966.30/539,775.52
  6. Step 6: Final answer
    x = 210,623.74

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1.5x scale

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.