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Finding the Fourth Proportional to 316,808.88, 436,838.04 and 201,934.32

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Solution

The fourth proportional to 316,808.88, 436,838.04 and 201,934.32 is: 278,441.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,808.88 : 436,838.04 = 201,934.32 : x
  2. Step 2: Convert to fraction form
    316,808.88/436,838.04 = 201,934.32/x
  3. Step 3: Cross multiply
    316,808.88x = 436,838.04 × 201,934.32
  4. Step 4: Simplify right side
    316,808.88x = 88,212,592,557.53
  5. Step 5: Solve for x
    x = 88,212,592,557.53/316,808.88
  6. Step 6: Final answer
    x = 278,441.04

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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.