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Finding the Fourth Proportional to 398,346.23, 549,710.69 and 217,059.73

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Solution

The fourth proportional to 398,346.23, 549,710.69 and 217,059.73 is: 299,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,346.23 : 549,710.69 = 217,059.73 : x
  2. Step 2: Convert to fraction form
    398,346.23/549,710.69 = 217,059.73/x
  3. Step 3: Cross multiply
    398,346.23x = 549,710.69 × 217,059.73
  4. Step 4: Simplify right side
    398,346.23x = 119,320,051,489.94
  5. Step 5: Solve for x
    x = 119,320,051,489.94/398,346.23
  6. Step 6: Final answer
    x = 299,538.55

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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.