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Finding the Fourth Proportional to 387,091.40, 580,411.11 and 150,157.22

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Solution

The fourth proportional to 387,091.40, 580,411.11 and 150,157.22 is: 225,148.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,091.40 : 580,411.11 = 150,157.22 : x
  2. Step 2: Convert to fraction form
    387,091.40/580,411.11 = 150,157.22/x
  3. Step 3: Cross multiply
    387,091.40x = 580,411.11 × 150,157.22
  4. Step 4: Simplify right side
    387,091.40x = 87,152,918,734.71
  5. Step 5: Solve for x
    x = 87,152,918,734.71/387,091.40
  6. Step 6: Final answer
    x = 225,148.17

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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.