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Finding the Fourth Proportional to 478,701.52, 660,646.08 and 263,879.80

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Solution

The fourth proportional to 478,701.52, 660,646.08 and 263,879.80 is: 364,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,701.52 : 660,646.08 = 263,879.80 : x
  2. Step 2: Convert to fraction form
    478,701.52/660,646.08 = 263,879.80/x
  3. Step 3: Cross multiply
    478,701.52x = 660,646.08 × 263,879.80
  4. Step 4: Simplify right side
    478,701.52x = 174,331,155,461.18
  5. Step 5: Solve for x
    x = 174,331,155,461.18/478,701.52
  6. Step 6: Final answer
    x = 364,175.06

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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.