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Finding the Fourth Proportional to 206,590.70, 310,068.30 and 122,245.40

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Solution

The fourth proportional to 206,590.70, 310,068.30 and 122,245.40 is: 183,475.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,590.70 : 310,068.30 = 122,245.40 : x
  2. Step 2: Convert to fraction form
    206,590.70/310,068.30 = 122,245.40/x
  3. Step 3: Cross multiply
    206,590.70x = 310,068.30 × 122,245.40
  4. Step 4: Simplify right side
    206,590.70x = 37,904,423,360.82
  5. Step 5: Solve for x
    x = 37,904,423,360.82/206,590.70
  6. Step 6: Final answer
    x = 183,475.94

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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.