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Finding the Fourth Proportional to 335,315.20, 502,972.80 and 313,007.80

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Solution

The fourth proportional to 335,315.20, 502,972.80 and 313,007.80 is: 469,511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,315.20 : 502,972.80 = 313,007.80 : x
  2. Step 2: Convert to fraction form
    335,315.20/502,972.80 = 313,007.80/x
  3. Step 3: Cross multiply
    335,315.20x = 502,972.80 × 313,007.80
  4. Step 4: Simplify right side
    335,315.20x = 157,434,409,587.84
  5. Step 5: Solve for x
    x = 157,434,409,587.84/335,315.20
  6. Step 6: Final answer
    x = 469,511.70

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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.