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Finding the Fourth Proportional to 539,121.40, 808,034.10 and 223,415.80

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Solution

The fourth proportional to 539,121.40, 808,034.10 and 223,415.80 is: 334,855.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,121.40 : 808,034.10 = 223,415.80 : x
  2. Step 2: Convert to fraction form
    539,121.40/808,034.10 = 223,415.80/x
  3. Step 3: Cross multiply
    539,121.40x = 808,034.10 × 223,415.80
  4. Step 4: Simplify right side
    539,121.40x = 180,527,584,878.78
  5. Step 5: Solve for x
    x = 180,527,584,878.78/539,121.40
  6. Step 6: Final answer
    x = 334,855.16

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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.