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Finding the Fourth Proportional to 309,746.87, 427,600.87 and 207,735.02

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Solution

The fourth proportional to 309,746.87, 427,600.87 and 207,735.02 is: 286,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,746.87 : 427,600.87 = 207,735.02 : x
  2. Step 2: Convert to fraction form
    309,746.87/427,600.87 = 207,735.02/x
  3. Step 3: Cross multiply
    309,746.87x = 427,600.87 × 207,735.02
  4. Step 4: Simplify right side
    309,746.87x = 88,827,673,143.46
  5. Step 5: Solve for x
    x = 88,827,673,143.46/309,746.87
  6. Step 6: Final answer
    x = 286,775.05

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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.