Home / 398,394.07-549,769.85-217,102.30

Finding the Fourth Proportional to 398,394.07, 549,769.85 and 217,102.30

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Solution

The fourth proportional to 398,394.07, 549,769.85 and 217,102.30 is: 299,593.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,394.07 : 549,769.85 = 217,102.30 : x
  2. Step 2: Convert to fraction form
    398,394.07/549,769.85 = 217,102.30/x
  3. Step 3: Cross multiply
    398,394.07x = 549,769.85 × 217,102.30
  4. Step 4: Simplify right side
    398,394.07x = 119,356,297,259.85
  5. Step 5: Solve for x
    x = 119,356,297,259.85/398,394.07
  6. Step 6: Final answer
    x = 299,593.56

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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.