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Finding the Fourth Proportional to 394,989.17, 592,483.76 and 217,404.77

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Solution

The fourth proportional to 394,989.17, 592,483.76 and 217,404.77 is: 326,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,989.17 : 592,483.76 = 217,404.77 : x
  2. Step 2: Convert to fraction form
    394,989.17/592,483.76 = 217,404.77/x
  3. Step 3: Cross multiply
    394,989.17x = 592,483.76 × 217,404.77
  4. Step 4: Simplify right side
    394,989.17x = 128,808,794,484.51
  5. Step 5: Solve for x
    x = 128,808,794,484.51/394,989.17
  6. Step 6: Final answer
    x = 326,107.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.