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Finding the Fourth Proportional to 478,838.40, 660,801.26 and 263,986.02

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Solution

The fourth proportional to 478,838.40, 660,801.26 and 263,986.02 is: 364,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,838.40 : 660,801.26 = 263,986.02 : x
  2. Step 2: Convert to fraction form
    478,838.40/660,801.26 = 263,986.02/x
  3. Step 3: Cross multiply
    478,838.40x = 660,801.26 × 263,986.02
  4. Step 4: Simplify right side
    478,838.40x = 174,442,294,638.39
  5. Step 5: Solve for x
    x = 174,442,294,638.39/478,838.40
  6. Step 6: Final answer
    x = 364,303.06

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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.