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Finding the Fourth Proportional to 478,296.09, 660,078.52 and 263,436.10

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Solution

The fourth proportional to 478,296.09, 660,078.52 and 263,436.10 is: 363,558.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,296.09 : 660,078.52 = 263,436.10 : x
  2. Step 2: Convert to fraction form
    478,296.09/660,078.52 = 263,436.10/x
  3. Step 3: Cross multiply
    478,296.09x = 660,078.52 × 263,436.10
  4. Step 4: Simplify right side
    478,296.09x = 173,888,508,693.79
  5. Step 5: Solve for x
    x = 173,888,508,693.79/478,296.09
  6. Step 6: Final answer
    x = 363,558.29

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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.