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Finding the Fourth Proportional to 420,967.52, 580,946.58 and 251,300.12

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Solution

The fourth proportional to 420,967.52, 580,946.58 and 251,300.12 is: 346,800.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,967.52 : 580,946.58 = 251,300.12 : x
  2. Step 2: Convert to fraction form
    420,967.52/580,946.58 = 251,300.12/x
  3. Step 3: Cross multiply
    420,967.52x = 580,946.58 × 251,300.12
  4. Step 4: Simplify right side
    420,967.52x = 145,991,945,267.59
  5. Step 5: Solve for x
    x = 145,991,945,267.59/420,967.52
  6. Step 6: Final answer
    x = 346,800.97

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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.