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Finding the Fourth Proportional to 367,043.23, 550,386.85 and 215,289.90

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Solution

The fourth proportional to 367,043.23, 550,386.85 and 215,289.90 is: 322,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,043.23 : 550,386.85 = 215,289.90 : x
  2. Step 2: Convert to fraction form
    367,043.23/550,386.85 = 215,289.90/x
  3. Step 3: Cross multiply
    367,043.23x = 550,386.85 × 215,289.90
  4. Step 4: Simplify right side
    367,043.23x = 118,492,729,897.82
  5. Step 5: Solve for x
    x = 118,492,729,897.82/367,043.23
  6. Step 6: Final answer
    x = 322,830.45

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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.