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Finding the Fourth Proportional to 316,205.94, 436,354.92 and 172,962.90

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Solution

The fourth proportional to 316,205.94, 436,354.92 and 172,962.90 is: 238,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,205.94 : 436,354.92 = 172,962.90 : x
  2. Step 2: Convert to fraction form
    316,205.94/436,354.92 = 172,962.90/x
  3. Step 3: Cross multiply
    316,205.94x = 436,354.92 × 172,962.90
  4. Step 4: Simplify right side
    316,205.94x = 75,473,212,392.47
  5. Step 5: Solve for x
    x = 75,473,212,392.47/316,205.94
  6. Step 6: Final answer
    x = 238,683.73

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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.