Home / 257,828.40-386,649.88-89,303.32

Finding the Fourth Proportional to 257,828.40, 386,649.88 and 89,303.32

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Solution

The fourth proportional to 257,828.40, 386,649.88 and 89,303.32 is: 133,922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,828.40 : 386,649.88 = 89,303.32 : x
  2. Step 2: Convert to fraction form
    257,828.40/386,649.88 = 89,303.32/x
  3. Step 3: Cross multiply
    257,828.40x = 386,649.88 × 89,303.32
  4. Step 4: Simplify right side
    257,828.40x = 34,529,117,961.60
  5. Step 5: Solve for x
    x = 34,529,117,961.60/257,828.40
  6. Step 6: Final answer
    x = 133,922.86

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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.