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Finding the Fourth Proportional to 384,735.65, 577,140.37 and 100,431.11

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Solution

The fourth proportional to 384,735.65, 577,140.37 and 100,431.11 is: 150,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,735.65 : 577,140.37 = 100,431.11 : x
  2. Step 2: Convert to fraction form
    384,735.65/577,140.37 = 100,431.11/x
  3. Step 3: Cross multiply
    384,735.65x = 577,140.37 × 100,431.11
  4. Step 4: Simplify right side
    384,735.65x = 57,962,849,176.68
  5. Step 5: Solve for x
    x = 57,962,849,176.68/384,735.65
  6. Step 6: Final answer
    x = 150,656.30

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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.