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Finding the Fourth Proportional to 212,955.53, 293,878.88 and 122,329.05

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Solution

The fourth proportional to 212,955.53, 293,878.88 and 122,329.05 is: 168,814.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,955.53 : 293,878.88 = 122,329.05 : x
  2. Step 2: Convert to fraction form
    212,955.53/293,878.88 = 122,329.05/x
  3. Step 3: Cross multiply
    212,955.53x = 293,878.88 × 122,329.05
  4. Step 4: Simplify right side
    212,955.53x = 35,949,924,511.29
  5. Step 5: Solve for x
    x = 35,949,924,511.29/212,955.53
  6. Step 6: Final answer
    x = 168,814.23

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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.