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Finding the Fourth Proportional to 386,673.75, 533,613.42 and 216,911.52

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Solution

The fourth proportional to 386,673.75, 533,613.42 and 216,911.52 is: 299,339.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,673.75 : 533,613.42 = 216,911.52 : x
  2. Step 2: Convert to fraction form
    386,673.75/533,613.42 = 216,911.52/x
  3. Step 3: Cross multiply
    386,673.75x = 533,613.42 × 216,911.52
  4. Step 4: Simplify right side
    386,673.75x = 115,746,898,024.60
  5. Step 5: Solve for x
    x = 115,746,898,024.60/386,673.75
  6. Step 6: Final answer
    x = 299,339.94

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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.