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Finding the Fourth Proportional to 478,359.50, 660,106.41 and 263,487.56

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Solution

The fourth proportional to 478,359.50, 660,106.41 and 263,487.56 is: 363,596.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,359.50 : 660,106.41 = 263,487.56 : x
  2. Step 2: Convert to fraction form
    478,359.50/660,106.41 = 263,487.56/x
  3. Step 3: Cross multiply
    478,359.50x = 660,106.41 × 263,487.56
  4. Step 4: Simplify right side
    478,359.50x = 173,929,827,311.26
  5. Step 5: Solve for x
    x = 173,929,827,311.26/478,359.50
  6. Step 6: Final answer
    x = 363,596.47

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1.5x scale

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.