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Finding the Fourth Proportional to 538,909.60, 808,479.60 and 164,970.40

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Solution

The fourth proportional to 538,909.60, 808,479.60 and 164,970.40 is: 247,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,909.60 : 808,479.60 = 164,970.40 : x
  2. Step 2: Convert to fraction form
    538,909.60/808,479.60 = 164,970.40/x
  3. Step 3: Cross multiply
    538,909.60x = 808,479.60 × 164,970.40
  4. Step 4: Simplify right side
    538,909.60x = 133,375,203,003.84
  5. Step 5: Solve for x
    x = 133,375,203,003.84/538,909.60
  6. Step 6: Final answer
    x = 247,490.86

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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.