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Finding the Fourth Proportional to 356,943.69, 535,243.30 and 207,221.67

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Solution

The fourth proportional to 356,943.69, 535,243.30 and 207,221.67 is: 310,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,943.69 : 535,243.30 = 207,221.67 : x
  2. Step 2: Convert to fraction form
    356,943.69/535,243.30 = 207,221.67/x
  3. Step 3: Cross multiply
    356,943.69x = 535,243.30 × 207,221.67
  4. Step 4: Simplify right side
    356,943.69x = 110,914,009,915.91
  5. Step 5: Solve for x
    x = 110,914,009,915.91/356,943.69
  6. Step 6: Final answer
    x = 310,732.52

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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.