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Finding the Fourth Proportional to 398,452.77, 549,848.81 and 217,160.81

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Solution

The fourth proportional to 398,452.77, 549,848.81 and 217,160.81 is: 299,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,452.77 : 549,848.81 = 217,160.81 : x
  2. Step 2: Convert to fraction form
    398,452.77/549,848.81 = 217,160.81/x
  3. Step 3: Cross multiply
    398,452.77x = 549,848.81 × 217,160.81
  4. Step 4: Simplify right side
    398,452.77x = 119,405,609,122.09
  5. Step 5: Solve for x
    x = 119,405,609,122.09/398,452.77
  6. Step 6: Final answer
    x = 299,673.18

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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.