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Finding the Fourth Proportional to 478,876.01, 660,878.67 and 264,015.75

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Solution

The fourth proportional to 478,876.01, 660,878.67 and 264,015.75 is: 364,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,876.01 : 660,878.67 = 264,015.75 : x
  2. Step 2: Convert to fraction form
    478,876.01/660,878.67 = 264,015.75/x
  3. Step 3: Cross multiply
    478,876.01x = 660,878.67 × 264,015.75
  4. Step 4: Simplify right side
    478,876.01x = 174,482,377,719.05
  5. Step 5: Solve for x
    x = 174,482,377,719.05/478,876.01
  6. Step 6: Final answer
    x = 364,358.15

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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.