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Finding the Fourth Proportional to 255,085.13, 351,870.94 and 159,425.75

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Solution

The fourth proportional to 255,085.13, 351,870.94 and 159,425.75 is: 219,915.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,085.13 : 351,870.94 = 159,425.75 : x
  2. Step 2: Convert to fraction form
    255,085.13/351,870.94 = 159,425.75/x
  3. Step 3: Cross multiply
    255,085.13x = 351,870.94 × 159,425.75
  4. Step 4: Simplify right side
    255,085.13x = 56,097,288,512.71
  5. Step 5: Solve for x
    x = 56,097,288,512.71/255,085.13
  6. Step 6: Final answer
    x = 219,915.95

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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.