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Finding the Fourth Proportional to 398,073.69, 549,351.48 and 216,795.45

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Solution

The fourth proportional to 398,073.69, 549,351.48 and 216,795.45 is: 299,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,073.69 : 549,351.48 = 216,795.45 : x
  2. Step 2: Convert to fraction form
    398,073.69/549,351.48 = 216,795.45/x
  3. Step 3: Cross multiply
    398,073.69x = 549,351.48 × 216,795.45
  4. Step 4: Simplify right side
    398,073.69x = 119,096,904,187.82
  5. Step 5: Solve for x
    x = 119,096,904,187.82/398,073.69
  6. Step 6: Final answer
    x = 299,183.06

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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.