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Finding the Fourth Proportional to 478,604.25, 660,478.20 and 263,752.02

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Solution

The fourth proportional to 478,604.25, 660,478.20 and 263,752.02 is: 363,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,604.25 : 660,478.20 = 263,752.02 : x
  2. Step 2: Convert to fraction form
    478,604.25/660,478.20 = 263,752.02/x
  3. Step 3: Cross multiply
    478,604.25x = 660,478.20 × 263,752.02
  4. Step 4: Simplify right side
    478,604.25x = 174,202,459,415.96
  5. Step 5: Solve for x
    x = 174,202,459,415.96/478,604.25
  6. Step 6: Final answer
    x = 363,980.18

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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.