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Finding the Fourth Proportional to 316,282.10, 436,479.78 and 173,042.21

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Solution

The fourth proportional to 316,282.10, 436,479.78 and 173,042.21 is: 238,803.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,282.10 : 436,479.78 = 173,042.21 : x
  2. Step 2: Convert to fraction form
    316,282.10/436,479.78 = 173,042.21/x
  3. Step 3: Cross multiply
    316,282.10x = 436,479.78 × 173,042.21
  4. Step 4: Simplify right side
    316,282.10x = 75,529,425,751.51
  5. Step 5: Solve for x
    x = 75,529,425,751.51/316,282.10
  6. Step 6: Final answer
    x = 238,803.98

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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.