Home / 398,439.02-549,829.83-217,147.05

Finding the Fourth Proportional to 398,439.02, 549,829.83 and 217,147.05

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Solution

The fourth proportional to 398,439.02, 549,829.83 and 217,147.05 is: 299,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,439.02 : 549,829.83 = 217,147.05 : x
  2. Step 2: Convert to fraction form
    398,439.02/549,829.83 = 217,147.05/x
  3. Step 3: Cross multiply
    398,439.02x = 549,829.83 × 217,147.05
  4. Step 4: Simplify right side
    398,439.02x = 119,393,926,400.80
  5. Step 5: Solve for x
    x = 119,393,926,400.80/398,439.02
  6. Step 6: Final answer
    x = 299,654.20

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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.