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Finding the Fourth Proportional to 398,370.89, 549,737.88 and 223,935.77

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Solution

The fourth proportional to 398,370.89, 549,737.88 and 223,935.77 is: 309,023.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,370.89 : 549,737.88 = 223,935.77 : x
  2. Step 2: Convert to fraction form
    398,370.89/549,737.88 = 223,935.77/x
  3. Step 3: Cross multiply
    398,370.89x = 549,737.88 × 223,935.77
  4. Step 4: Simplify right side
    398,370.89x = 123,105,975,455.97
  5. Step 5: Solve for x
    x = 123,105,975,455.97/398,370.89
  6. Step 6: Final answer
    x = 309,023.52

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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.