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Finding the Fourth Proportional to 283,793.36, 390,914.76 and 216,608.72

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Solution

The fourth proportional to 283,793.36, 390,914.76 and 216,608.72 is: 298,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,793.36 : 390,914.76 = 216,608.72 : x
  2. Step 2: Convert to fraction form
    283,793.36/390,914.76 = 216,608.72/x
  3. Step 3: Cross multiply
    283,793.36x = 390,914.76 × 216,608.72
  4. Step 4: Simplify right side
    283,793.36x = 84,675,545,792.71
  5. Step 5: Solve for x
    x = 84,675,545,792.71/283,793.36
  6. Step 6: Final answer
    x = 298,370.43

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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.