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Finding the Fourth Proportional to 398,303.73, 549,652.16 and 217,016.96

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Solution

The fourth proportional to 398,303.73, 549,652.16 and 217,016.96 is: 299,479.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,303.73 : 549,652.16 = 217,016.96 : x
  2. Step 2: Convert to fraction form
    398,303.73/549,652.16 = 217,016.96/x
  3. Step 3: Cross multiply
    398,303.73x = 549,652.16 × 217,016.96
  4. Step 4: Simplify right side
    398,303.73x = 119,283,838,614.92
  5. Step 5: Solve for x
    x = 119,283,838,614.92/398,303.73
  6. Step 6: Final answer
    x = 299,479.59

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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.