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Finding the Fourth Proportional to 316,387.65, 436,609.12 and 173,144.82

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Solution

The fourth proportional to 316,387.65, 436,609.12 and 173,144.82 is: 238,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,387.65 : 436,609.12 = 173,144.82 : x
  2. Step 2: Convert to fraction form
    316,387.65/436,609.12 = 173,144.82/x
  3. Step 3: Cross multiply
    316,387.65x = 436,609.12 × 173,144.82
  4. Step 4: Simplify right side
    316,387.65x = 75,596,607,492.76
  5. Step 5: Solve for x
    x = 75,596,607,492.76/316,387.65
  6. Step 6: Final answer
    x = 238,936.66

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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.