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Finding the Fourth Proportional to 313,575.57, 432,495.86 and 216,940.21

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Solution

The fourth proportional to 313,575.57, 432,495.86 and 216,940.21 is: 299,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,575.57 : 432,495.86 = 216,940.21 : x
  2. Step 2: Convert to fraction form
    313,575.57/432,495.86 = 216,940.21/x
  3. Step 3: Cross multiply
    313,575.57x = 432,495.86 × 216,940.21
  4. Step 4: Simplify right side
    313,575.57x = 93,825,740,526.59
  5. Step 5: Solve for x
    x = 93,825,740,526.59/313,575.57
  6. Step 6: Final answer
    x = 299,212.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.