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Finding the Fourth Proportional to 316,720.89, 437,074.95 and 173,486.10

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Solution

The fourth proportional to 316,720.89, 437,074.95 and 173,486.10 is: 239,410.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,720.89 : 437,074.95 = 173,486.10 : x
  2. Step 2: Convert to fraction form
    316,720.89/437,074.95 = 173,486.10/x
  3. Step 3: Cross multiply
    316,720.89x = 437,074.95 × 173,486.10
  4. Step 4: Simplify right side
    316,720.89x = 75,826,428,483.20
  5. Step 5: Solve for x
    x = 75,826,428,483.20/316,720.89
  6. Step 6: Final answer
    x = 239,410.88

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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.