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Finding the Fourth Proportional to 478,838.76, 660,801.96 and 263,986.53

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Solution

The fourth proportional to 478,838.76, 660,801.96 and 263,986.53 is: 364,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,838.76 : 660,801.96 = 263,986.53 : x
  2. Step 2: Convert to fraction form
    478,838.76/660,801.96 = 263,986.53/x
  3. Step 3: Cross multiply
    478,838.76x = 660,801.96 × 263,986.53
  4. Step 4: Simplify right side
    478,838.76x = 174,442,816,437.60
  5. Step 5: Solve for x
    x = 174,442,816,437.60/478,838.76
  6. Step 6: Final answer
    x = 364,303.88

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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.