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Finding the Fourth Proportional to 398,026.48, 549,268.65 and 216,740.56

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Solution

The fourth proportional to 398,026.48, 549,268.65 and 216,740.56 is: 299,097.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,026.48 : 549,268.65 = 216,740.56 : x
  2. Step 2: Convert to fraction form
    398,026.48/549,268.65 = 216,740.56/x
  3. Step 3: Cross multiply
    398,026.48x = 549,268.65 × 216,740.56
  4. Step 4: Simplify right side
    398,026.48x = 119,048,794,791.44
  5. Step 5: Solve for x
    x = 119,048,794,791.44/398,026.48
  6. Step 6: Final answer
    x = 299,097.68

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1.5x scale

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.