Home / 309,829.68-427,697.28-262,331.28

Finding the Fourth Proportional to 309,829.68, 427,697.28 and 262,331.28

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Solution

The fourth proportional to 309,829.68, 427,697.28 and 262,331.28 is: 362,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,829.68 : 427,697.28 = 262,331.28 : x
  2. Step 2: Convert to fraction form
    309,829.68/427,697.28 = 262,331.28/x
  3. Step 3: Cross multiply
    309,829.68x = 427,697.28 × 262,331.28
  4. Step 4: Simplify right side
    309,829.68x = 112,198,374,914.92
  5. Step 5: Solve for x
    x = 112,198,374,914.92/309,829.68
  6. Step 6: Final answer
    x = 362,129.20

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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.