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Finding the Fourth Proportional to 540,558.30, 810,837.45 and 260,103.90

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Solution

The fourth proportional to 540,558.30, 810,837.45 and 260,103.90 is: 390,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,558.30 : 810,837.45 = 260,103.90 : x
  2. Step 2: Convert to fraction form
    540,558.30/810,837.45 = 260,103.90/x
  3. Step 3: Cross multiply
    540,558.30x = 810,837.45 × 260,103.90
  4. Step 4: Simplify right side
    540,558.30x = 210,901,983,011.06
  5. Step 5: Solve for x
    x = 210,901,983,011.06/540,558.30
  6. Step 6: Final answer
    x = 390,155.85

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Similar ratio
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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.