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Finding the Fourth Proportional to 258,100.71, 387,151.07 and 100,366.07

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Solution

The fourth proportional to 258,100.71, 387,151.07 and 100,366.07 is: 150,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,100.71 : 387,151.07 = 100,366.07 : x
  2. Step 2: Convert to fraction form
    258,100.71/387,151.07 = 100,366.07/x
  3. Step 3: Cross multiply
    258,100.71x = 387,151.07 × 100,366.07
  4. Step 4: Simplify right side
    258,100.71x = 38,856,831,392.19
  5. Step 5: Solve for x
    x = 38,856,831,392.19/258,100.71
  6. Step 6: Final answer
    x = 150,549.11

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1.5x scale

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.