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Finding the Fourth Proportional to 398,344.01, 549,707.63 and 217,057.51

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Solution

The fourth proportional to 398,344.01, 549,707.63 and 217,057.51 is: 299,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,344.01 : 549,707.63 = 217,057.51 : x
  2. Step 2: Convert to fraction form
    398,344.01/549,707.63 = 217,057.51/x
  3. Step 3: Cross multiply
    398,344.01x = 549,707.63 × 217,057.51
  4. Step 4: Simplify right side
    398,344.01x = 119,318,166,936.25
  5. Step 5: Solve for x
    x = 119,318,166,936.25/398,344.01
  6. Step 6: Final answer
    x = 299,535.48

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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.