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Finding the Fourth Proportional to 309,623, 464,475.90 and 122,590.76

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Solution

The fourth proportional to 309,623, 464,475.90 and 122,590.76 is: 183,902.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,623 : 464,475.90 = 122,590.76 : x
  2. Step 2: Convert to fraction form
    309,623/464,475.90 = 122,590.76/x
  3. Step 3: Cross multiply
    309,623x = 464,475.90 × 122,590.76
  4. Step 4: Simplify right side
    309,623x = 56,940,453,582.68
  5. Step 5: Solve for x
    x = 56,940,453,582.68/309,623
  6. Step 6: Final answer
    x = 183,902.53

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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.