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Finding the Fourth Proportional to 340,511.40, 510,767.10 and 303,769.80

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Solution

The fourth proportional to 340,511.40, 510,767.10 and 303,769.80 is: 455,654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,511.40 : 510,767.10 = 303,769.80 : x
  2. Step 2: Convert to fraction form
    340,511.40/510,767.10 = 303,769.80/x
  3. Step 3: Cross multiply
    340,511.40x = 510,767.10 × 303,769.80
  4. Step 4: Simplify right side
    340,511.40x = 155,155,619,813.58
  5. Step 5: Solve for x
    x = 155,155,619,813.58/340,511.40
  6. Step 6: Final answer
    x = 455,654.70

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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.