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Finding the Fourth Proportional to 367,818.40, 550,962.16 and 355,129.12

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Solution

The fourth proportional to 367,818.40, 550,962.16 and 355,129.12 is: 531,954.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,818.40 : 550,962.16 = 355,129.12 : x
  2. Step 2: Convert to fraction form
    367,818.40/550,962.16 = 355,129.12/x
  3. Step 3: Cross multiply
    367,818.40x = 550,962.16 × 355,129.12
  4. Step 4: Simplify right side
    367,818.40x = 195,662,707,034.10
  5. Step 5: Solve for x
    x = 195,662,707,034.10/367,818.40
  6. Step 6: Final answer
    x = 531,954.65

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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.