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Finding the Fourth Proportional to 437,908.80, 657,122.40 and 288,580.80

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Solution

The fourth proportional to 437,908.80, 657,122.40 and 288,580.80 is: 433,042.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,908.80 : 657,122.40 = 288,580.80 : x
  2. Step 2: Convert to fraction form
    437,908.80/657,122.40 = 288,580.80/x
  3. Step 3: Cross multiply
    437,908.80x = 657,122.40 × 288,580.80
  4. Step 4: Simplify right side
    437,908.80x = 189,632,907,889.92
  5. Step 5: Solve for x
    x = 189,632,907,889.92/437,908.80
  6. Step 6: Final answer
    x = 433,042.01

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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.