Home / 398,285.81-549,631.37-216,997.18

Finding the Fourth Proportional to 398,285.81, 549,631.37 and 216,997.18

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Solution

The fourth proportional to 398,285.81, 549,631.37 and 216,997.18 is: 299,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,285.81 : 549,631.37 = 216,997.18 : x
  2. Step 2: Convert to fraction form
    398,285.81/549,631.37 = 216,997.18/x
  3. Step 3: Cross multiply
    398,285.81x = 549,631.37 × 216,997.18
  4. Step 4: Simplify right side
    398,285.81x = 119,268,456,497.95
  5. Step 5: Solve for x
    x = 119,268,456,497.95/398,285.81
  6. Step 6: Final answer
    x = 299,454.45

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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.