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Finding the Fourth Proportional to 398,527.48, 549,967.35 and 217,239.76

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Solution

The fourth proportional to 398,527.48, 549,967.35 and 217,239.76 is: 299,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,527.48 : 549,967.35 = 217,239.76 : x
  2. Step 2: Convert to fraction form
    398,527.48/549,967.35 = 217,239.76/x
  3. Step 3: Cross multiply
    398,527.48x = 549,967.35 × 217,239.76
  4. Step 4: Simplify right side
    398,527.48x = 119,474,775,121.84
  5. Step 5: Solve for x
    x = 119,474,775,121.84/398,527.48
  6. Step 6: Final answer
    x = 299,790.56

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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.