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Finding the Fourth Proportional to 316,126.53, 436,248.59 and 172,886.13

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Solution

The fourth proportional to 316,126.53, 436,248.59 and 172,886.13 is: 238,579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,126.53 : 436,248.59 = 172,886.13 : x
  2. Step 2: Convert to fraction form
    316,126.53/436,248.59 = 172,886.13/x
  3. Step 3: Cross multiply
    316,126.53x = 436,248.59 × 172,886.13
  4. Step 4: Simplify right side
    316,126.53x = 75,421,329,578.63
  5. Step 5: Solve for x
    x = 75,421,329,578.63/316,126.53
  6. Step 6: Final answer
    x = 238,579.56

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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.