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Finding the Fourth Proportional to 308,344.68, 425,483.01 and 172,364.31

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Solution

The fourth proportional to 308,344.68, 425,483.01 and 172,364.31 is: 237,844.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,344.68 : 425,483.01 = 172,364.31 : x
  2. Step 2: Convert to fraction form
    308,344.68/425,483.01 = 172,364.31/x
  3. Step 3: Cross multiply
    308,344.68x = 425,483.01 × 172,364.31
  4. Step 4: Simplify right side
    308,344.68x = 73,338,085,435.37
  5. Step 5: Solve for x
    x = 73,338,085,435.37/308,344.68
  6. Step 6: Final answer
    x = 237,844.50

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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.