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Finding the Fourth Proportional to 316,632.69, 436,963.01 and 173,406.33

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Solution

The fourth proportional to 316,632.69, 436,963.01 and 173,406.33 is: 239,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,632.69 : 436,963.01 = 173,406.33 : x
  2. Step 2: Convert to fraction form
    316,632.69/436,963.01 = 173,406.33/x
  3. Step 3: Cross multiply
    316,632.69x = 436,963.01 × 173,406.33
  4. Step 4: Simplify right side
    316,632.69x = 75,772,151,042.82
  5. Step 5: Solve for x
    x = 75,772,151,042.82/316,632.69
  6. Step 6: Final answer
    x = 239,306.15

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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.