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Finding the Fourth Proportional to 398,411.00, 549,791.15 and 217,119.07

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Solution

The fourth proportional to 398,411.00, 549,791.15 and 217,119.07 is: 299,615.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,411.00 : 549,791.15 = 217,119.07 : x
  2. Step 2: Convert to fraction form
    398,411.00/549,791.15 = 217,119.07/x
  3. Step 3: Cross multiply
    398,411.00x = 549,791.15 × 217,119.07
  4. Step 4: Simplify right side
    398,411.00x = 119,370,142,350.55
  5. Step 5: Solve for x
    x = 119,370,142,350.55/398,411.00
  6. Step 6: Final answer
    x = 299,615.58

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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.