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Finding the Fourth Proportional to 608,468.80, 913,221.60 and 272,027.20

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Solution

The fourth proportional to 608,468.80, 913,221.60 and 272,027.20 is: 408,272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,468.80 : 913,221.60 = 272,027.20 : x
  2. Step 2: Convert to fraction form
    608,468.80/913,221.60 = 272,027.20/x
  3. Step 3: Cross multiply
    608,468.80x = 913,221.60 × 272,027.20
  4. Step 4: Simplify right side
    608,468.80x = 248,421,114,827.52
  5. Step 5: Solve for x
    x = 248,421,114,827.52/608,468.80
  6. Step 6: Final answer
    x = 408,272.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.