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Finding the Fourth Proportional to 316,396.16, 436,620.86 and 173,153.32

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Solution

The fourth proportional to 316,396.16, 436,620.86 and 173,153.32 is: 238,948.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,396.16 : 436,620.86 = 173,153.32 : x
  2. Step 2: Convert to fraction form
    316,396.16/436,620.86 = 173,153.32/x
  3. Step 3: Cross multiply
    316,396.16x = 436,620.86 × 173,153.32
  4. Step 4: Simplify right side
    316,396.16x = 75,602,351,490.26
  5. Step 5: Solve for x
    x = 75,602,351,490.26/316,396.16
  6. Step 6: Final answer
    x = 238,948.39

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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.