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Finding the Fourth Proportional to 468,070.39, 645,934.95 and 253,208.57

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Solution

The fourth proportional to 468,070.39, 645,934.95 and 253,208.57 is: 349,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,070.39 : 645,934.95 = 253,208.57 : x
  2. Step 2: Convert to fraction form
    468,070.39/645,934.95 = 253,208.57/x
  3. Step 3: Cross multiply
    468,070.39x = 645,934.95 × 253,208.57
  4. Step 4: Simplify right side
    468,070.39x = 163,556,263,736.48
  5. Step 5: Solve for x
    x = 163,556,263,736.48/468,070.39
  6. Step 6: Final answer
    x = 349,426.64

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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.