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Finding the Fourth Proportional to 536,055.17, 739,700.91 and 321,189.71

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Solution

The fourth proportional to 536,055.17, 739,700.91 and 321,189.71 is: 443,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,055.17 : 739,700.91 = 321,189.71 : x
  2. Step 2: Convert to fraction form
    536,055.17/739,700.91 = 321,189.71/x
  3. Step 3: Cross multiply
    536,055.17x = 739,700.91 × 321,189.71
  4. Step 4: Simplify right side
    536,055.17x = 237,584,317,071.13
  5. Step 5: Solve for x
    x = 237,584,317,071.13/536,055.17
  6. Step 6: Final answer
    x = 443,208.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.