Home / 386,774.28-533,746.08-217,008

Finding the Fourth Proportional to 386,774.28, 533,746.08 and 217,008

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Solution

The fourth proportional to 386,774.28, 533,746.08 and 217,008 is: 299,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,774.28 : 533,746.08 = 217,008 : x
  2. Step 2: Convert to fraction form
    386,774.28/533,746.08 = 217,008/x
  3. Step 3: Cross multiply
    386,774.28x = 533,746.08 × 217,008
  4. Step 4: Simplify right side
    386,774.28x = 115,827,169,328.64
  5. Step 5: Solve for x
    x = 115,827,169,328.64/386,774.28
  6. Step 6: Final answer
    x = 299,469.68

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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.