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Finding the Fourth Proportional to 308,010.76, 425,036.10 and 178,929.16

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Solution

The fourth proportional to 308,010.76, 425,036.10 and 178,929.16 is: 246,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,010.76 : 425,036.10 = 178,929.16 : x
  2. Step 2: Convert to fraction form
    308,010.76/425,036.10 = 178,929.16/x
  3. Step 3: Cross multiply
    308,010.76x = 425,036.10 × 178,929.16
  4. Step 4: Simplify right side
    308,010.76x = 76,051,352,342.68
  5. Step 5: Solve for x
    x = 76,051,352,342.68/308,010.76
  6. Step 6: Final answer
    x = 246,911.35

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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.