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Finding the Fourth Proportional to 468,071.39, 645,936.32 and 253,209.57

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Solution

The fourth proportional to 468,071.39, 645,936.32 and 253,209.57 is: 349,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,071.39 : 645,936.32 = 253,209.57 : x
  2. Step 2: Convert to fraction form
    468,071.39/645,936.32 = 253,209.57/x
  3. Step 3: Cross multiply
    468,071.39x = 645,936.32 × 253,209.57
  4. Step 4: Simplify right side
    468,071.39x = 163,557,257,834.58
  5. Step 5: Solve for x
    x = 163,557,257,834.58/468,071.39
  6. Step 6: Final answer
    x = 349,428.02

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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.