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Finding the Fourth Proportional to 296,987.10, 445,480.65 and 260,828.70

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Solution

The fourth proportional to 296,987.10, 445,480.65 and 260,828.70 is: 391,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,987.10 : 445,480.65 = 260,828.70 : x
  2. Step 2: Convert to fraction form
    296,987.10/445,480.65 = 260,828.70/x
  3. Step 3: Cross multiply
    296,987.10x = 445,480.65 × 260,828.70
  4. Step 4: Simplify right side
    296,987.10x = 116,194,138,814.66
  5. Step 5: Solve for x
    x = 116,194,138,814.66/296,987.10
  6. Step 6: Final answer
    x = 391,243.05

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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.