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Finding the Fourth Proportional to 346,043.70, 519,065.55 and 212,490.90

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Solution

The fourth proportional to 346,043.70, 519,065.55 and 212,490.90 is: 318,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,043.70 : 519,065.55 = 212,490.90 : x
  2. Step 2: Convert to fraction form
    346,043.70/519,065.55 = 212,490.90/x
  3. Step 3: Cross multiply
    346,043.70x = 519,065.55 × 212,490.90
  4. Step 4: Simplify right side
    346,043.70x = 110,296,705,878.50
  5. Step 5: Solve for x
    x = 110,296,705,878.50/346,043.70
  6. Step 6: Final answer
    x = 318,736.35

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Similar ratio
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1.5x scale

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.