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Finding the Fourth Proportional to 478,820.05, 660,773.67 and 263,955.40

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Solution

The fourth proportional to 478,820.05, 660,773.67 and 263,955.40 is: 364,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,820.05 : 660,773.67 = 263,955.40 : x
  2. Step 2: Convert to fraction form
    478,820.05/660,773.67 = 263,955.40/x
  3. Step 3: Cross multiply
    478,820.05x = 660,773.67 × 263,955.40
  4. Step 4: Simplify right side
    478,820.05x = 174,414,778,374.32
  5. Step 5: Solve for x
    x = 174,414,778,374.32/478,820.05
  6. Step 6: Final answer
    x = 364,259.56

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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.