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Finding the Fourth Proportional to 340,463.70, 510,695.55 and 221,490.90

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Solution

The fourth proportional to 340,463.70, 510,695.55 and 221,490.90 is: 332,236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,463.70 : 510,695.55 = 221,490.90 : x
  2. Step 2: Convert to fraction form
    340,463.70/510,695.55 = 221,490.90/x
  3. Step 3: Cross multiply
    340,463.70x = 510,695.55 × 221,490.90
  4. Step 4: Simplify right side
    340,463.70x = 113,114,416,995.50
  5. Step 5: Solve for x
    x = 113,114,416,995.50/340,463.70
  6. Step 6: Final answer
    x = 332,236.35

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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.