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Finding the Fourth Proportional to 316,343.25, 436,552.47 and 171,148.57

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Solution

The fourth proportional to 316,343.25, 436,552.47 and 171,148.57 is: 236,184.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,343.25 : 436,552.47 = 171,148.57 : x
  2. Step 2: Convert to fraction form
    316,343.25/436,552.47 = 171,148.57/x
  3. Step 3: Cross multiply
    316,343.25x = 436,552.47 × 171,148.57
  4. Step 4: Simplify right side
    316,343.25x = 74,715,331,828.92
  5. Step 5: Solve for x
    x = 74,715,331,828.92/316,343.25
  6. Step 6: Final answer
    x = 236,184.37

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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.