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Finding the Fourth Proportional to 540,515.40, 810,139.80 and 220,467.53

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Solution

The fourth proportional to 540,515.40, 810,139.80 and 220,467.53 is: 330,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,515.40 : 810,139.80 = 220,467.53 : x
  2. Step 2: Convert to fraction form
    540,515.40/810,139.80 = 220,467.53/x
  3. Step 3: Cross multiply
    540,515.40x = 810,139.80 × 220,467.53
  4. Step 4: Simplify right side
    540,515.40x = 178,609,516,610.00
  5. Step 5: Solve for x
    x = 178,609,516,610.00/540,515.40
  6. Step 6: Final answer
    x = 330,442.97

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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.