Home / 386,845.02-533,856.69-217,089.54

Finding the Fourth Proportional to 386,845.02, 533,856.69 and 217,089.54

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Solution

The fourth proportional to 386,845.02, 533,856.69 and 217,089.54 is: 299,589.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,845.02 : 533,856.69 = 217,089.54 : x
  2. Step 2: Convert to fraction form
    386,845.02/533,856.69 = 217,089.54/x
  3. Step 3: Cross multiply
    386,845.02x = 533,856.69 × 217,089.54
  4. Step 4: Simplify right side
    386,845.02x = 115,894,703,258.02
  5. Step 5: Solve for x
    x = 115,894,703,258.02/386,845.02
  6. Step 6: Final answer
    x = 299,589.49

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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.