Home / 398,289.20-549,636.03-217,000.56

Finding the Fourth Proportional to 398,289.20, 549,636.03 and 217,000.56

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Solution

The fourth proportional to 398,289.20, 549,636.03 and 217,000.56 is: 299,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,289.20 : 549,636.03 = 217,000.56 : x
  2. Step 2: Convert to fraction form
    398,289.20/549,636.03 = 217,000.56/x
  3. Step 3: Cross multiply
    398,289.20x = 549,636.03 × 217,000.56
  4. Step 4: Simplify right side
    398,289.20x = 119,271,326,306.18
  5. Step 5: Solve for x
    x = 119,271,326,306.18/398,289.20
  6. Step 6: Final answer
    x = 299,459.11

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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.