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Finding the Fourth Proportional to 398,019.02, 549,265.86 and 216,732.24

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Solution

The fourth proportional to 398,019.02, 549,265.86 and 216,732.24 is: 299,090.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,019.02 : 549,265.86 = 216,732.24 : x
  2. Step 2: Convert to fraction form
    398,019.02/549,265.86 = 216,732.24/x
  3. Step 3: Cross multiply
    398,019.02x = 549,265.86 × 216,732.24
  4. Step 4: Simplify right side
    398,019.02x = 119,043,620,193.33
  5. Step 5: Solve for x
    x = 119,043,620,193.33/398,019.02
  6. Step 6: Final answer
    x = 299,090.28

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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.