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Finding the Fourth Proportional to 398,512.75, 549,953.36 and 217,224.71

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Solution

The fourth proportional to 398,512.75, 549,953.36 and 217,224.71 is: 299,773.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,512.75 : 549,953.36 = 217,224.71 : x
  2. Step 2: Convert to fraction form
    398,512.75/549,953.36 = 217,224.71/x
  3. Step 3: Cross multiply
    398,512.75x = 549,953.36 × 217,224.71
  4. Step 4: Simplify right side
    398,512.75x = 119,463,461,085.55
  5. Step 5: Solve for x
    x = 119,463,461,085.55/398,512.75
  6. Step 6: Final answer
    x = 299,773.25

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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.