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Finding the Fourth Proportional to 478,305.36, 660,091.38 and 263,445.36

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Solution

The fourth proportional to 478,305.36, 660,091.38 and 263,445.36 is: 363,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,305.36 : 660,091.38 = 263,445.36 : x
  2. Step 2: Convert to fraction form
    478,305.36/660,091.38 = 263,445.36/x
  3. Step 3: Cross multiply
    478,305.36x = 660,091.38 × 263,445.36
  4. Step 4: Simplify right side
    478,305.36x = 173,898,011,237.00
  5. Step 5: Solve for x
    x = 173,898,011,237.00/478,305.36
  6. Step 6: Final answer
    x = 363,571.11

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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.