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Finding the Fourth Proportional to 398,367.52, 549,700.83 and 243,240.77

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Solution

The fourth proportional to 398,367.52, 549,700.83 and 243,240.77 is: 335,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,367.52 : 549,700.83 = 243,240.77 : x
  2. Step 2: Convert to fraction form
    398,367.52/549,700.83 = 243,240.77/x
  3. Step 3: Cross multiply
    398,367.52x = 549,700.83 × 243,240.77
  4. Step 4: Simplify right side
    398,367.52x = 133,709,654,533.09
  5. Step 5: Solve for x
    x = 133,709,654,533.09/398,367.52
  6. Step 6: Final answer
    x = 335,643.97

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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.