Home / 398,557.30-549,988.70-217,251.35

Finding the Fourth Proportional to 398,557.30, 549,988.70 and 217,251.35

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Solution

The fourth proportional to 398,557.30, 549,988.70 and 217,251.35 is: 299,795.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,557.30 : 549,988.70 = 217,251.35 : x
  2. Step 2: Convert to fraction form
    398,557.30/549,988.70 = 217,251.35/x
  3. Step 3: Cross multiply
    398,557.30x = 549,988.70 × 217,251.35
  4. Step 4: Simplify right side
    398,557.30x = 119,485,787,848.46
  5. Step 5: Solve for x
    x = 119,485,787,848.46/398,557.30
  6. Step 6: Final answer
    x = 299,795.76

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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.