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Finding the Fourth Proportional to 521,364.90, 782,060.94 and 166,378.44

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Solution

The fourth proportional to 521,364.90, 782,060.94 and 166,378.44 is: 249,572.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,364.90 : 782,060.94 = 166,378.44 : x
  2. Step 2: Convert to fraction form
    521,364.90/782,060.94 = 166,378.44/x
  3. Step 3: Cross multiply
    521,364.90x = 782,060.94 × 166,378.44
  4. Step 4: Simplify right side
    521,364.90x = 130,118,079,182.13
  5. Step 5: Solve for x
    x = 130,118,079,182.13/521,364.90
  6. Step 6: Final answer
    x = 249,572.00

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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.