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Finding the Fourth Proportional to 316,136.16, 436,264.92 and 172,894.68

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Solution

The fourth proportional to 316,136.16, 436,264.92 and 172,894.68 is: 238,593.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,136.16 : 436,264.92 = 172,894.68 : x
  2. Step 2: Convert to fraction form
    316,136.16/436,264.92 = 172,894.68/x
  3. Step 3: Cross multiply
    316,136.16x = 436,264.92 × 172,894.68
  4. Step 4: Simplify right side
    316,136.16x = 75,427,883,738.63
  5. Step 5: Solve for x
    x = 75,427,883,738.63/316,136.16
  6. Step 6: Final answer
    x = 238,593.03

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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.