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Finding the Fourth Proportional to 540,315.51, 810,473.27 and 207,813.75

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Solution

The fourth proportional to 540,315.51, 810,473.27 and 207,813.75 is: 311,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,315.51 : 810,473.27 = 207,813.75 : x
  2. Step 2: Convert to fraction form
    540,315.51/810,473.27 = 207,813.75/x
  3. Step 3: Cross multiply
    540,315.51x = 810,473.27 × 207,813.75
  4. Step 4: Simplify right side
    540,315.51x = 168,427,488,474.39
  5. Step 5: Solve for x
    x = 168,427,488,474.39/540,315.51
  6. Step 6: Final answer
    x = 311,720.63

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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.