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Finding the Fourth Proportional to 348,295.69, 480,700.60 and 212,408.47

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Solution

The fourth proportional to 348,295.69, 480,700.60 and 212,408.47 is: 293,155.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,295.69 : 480,700.60 = 212,408.47 : x
  2. Step 2: Convert to fraction form
    348,295.69/480,700.60 = 212,408.47/x
  3. Step 3: Cross multiply
    348,295.69x = 480,700.60 × 212,408.47
  4. Step 4: Simplify right side
    348,295.69x = 102,104,879,043.94
  5. Step 5: Solve for x
    x = 102,104,879,043.94/348,295.69
  6. Step 6: Final answer
    x = 293,155.73

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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.