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Finding the Fourth Proportional to 385,078.05, 577,600.99 and 100,762.29

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Solution

The fourth proportional to 385,078.05, 577,600.99 and 100,762.29 is: 151,139.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,078.05 : 577,600.99 = 100,762.29 : x
  2. Step 2: Convert to fraction form
    385,078.05/577,600.99 = 100,762.29/x
  3. Step 3: Cross multiply
    385,078.05x = 577,600.99 × 100,762.29
  4. Step 4: Simplify right side
    385,078.05x = 58,200,398,206.76
  5. Step 5: Solve for x
    x = 58,200,398,206.76/385,078.05
  6. Step 6: Final answer
    x = 151,139.23

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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.