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Finding the Fourth Proportional to 351,859.95, 485,435.63 and 231,068.30

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Solution

The fourth proportional to 351,859.95, 485,435.63 and 231,068.30 is: 318,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,859.95 : 485,435.63 = 231,068.30 : x
  2. Step 2: Convert to fraction form
    351,859.95/485,435.63 = 231,068.30/x
  3. Step 3: Cross multiply
    351,859.95x = 485,435.63 × 231,068.30
  4. Step 4: Simplify right side
    351,859.95x = 112,168,783,934.02
  5. Step 5: Solve for x
    x = 112,168,783,934.02/351,859.95
  6. Step 6: Final answer
    x = 318,788.15

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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.