Home / 257,829.40-386,651.38-89,304.32

Finding the Fourth Proportional to 257,829.40, 386,651.38 and 89,304.32

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Solution

The fourth proportional to 257,829.40, 386,651.38 and 89,304.32 is: 133,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,829.40 : 386,651.38 = 89,304.32 : x
  2. Step 2: Convert to fraction form
    257,829.40/386,651.38 = 89,304.32/x
  3. Step 3: Cross multiply
    257,829.40x = 386,651.38 × 89,304.32
  4. Step 4: Simplify right side
    257,829.40x = 34,529,638,567.96
  5. Step 5: Solve for x
    x = 34,529,638,567.96/257,829.40
  6. Step 6: Final answer
    x = 133,924.36

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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.