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Finding the Fourth Proportional to 348,295.50, 480,700.31 and 212,408.26

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Solution

The fourth proportional to 348,295.50, 480,700.31 and 212,408.26 is: 293,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,295.50 : 480,700.31 = 212,408.26 : x
  2. Step 2: Convert to fraction form
    348,295.50/480,700.31 = 212,408.26/x
  3. Step 3: Cross multiply
    348,295.50x = 480,700.31 × 212,408.26
  4. Step 4: Simplify right side
    348,295.50x = 102,104,714,164.77
  5. Step 5: Solve for x
    x = 102,104,714,164.77/348,295.50
  6. Step 6: Final answer
    x = 293,155.42

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1.5x scale

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.