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Finding the Fourth Proportional to 403,240.80, 604,861.20 and 277,269.60

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Solution

The fourth proportional to 403,240.80, 604,861.20 and 277,269.60 is: 415,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,240.80 : 604,861.20 = 277,269.60 : x
  2. Step 2: Convert to fraction form
    403,240.80/604,861.20 = 277,269.60/x
  3. Step 3: Cross multiply
    403,240.80x = 604,861.20 × 277,269.60
  4. Step 4: Simplify right side
    403,240.80x = 167,709,622,979.52
  5. Step 5: Solve for x
    x = 167,709,622,979.52/403,240.80
  6. Step 6: Final answer
    x = 415,904.40

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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.