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Finding the Fourth Proportional to 478,934.78, 660,928.82 and 264,078.23

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Solution

The fourth proportional to 478,934.78, 660,928.82 and 264,078.23 is: 364,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,934.78 : 660,928.82 = 264,078.23 : x
  2. Step 2: Convert to fraction form
    478,934.78/660,928.82 = 264,078.23/x
  3. Step 3: Cross multiply
    478,934.78x = 660,928.82 × 264,078.23
  4. Step 4: Simplify right side
    478,934.78x = 174,536,908,316.55
  5. Step 5: Solve for x
    x = 174,536,908,316.55/478,934.78
  6. Step 6: Final answer
    x = 364,427.30

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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.