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Finding the Fourth Proportional to 260,841.70, 391,392.15 and 103,075.30

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Solution

The fourth proportional to 260,841.70, 391,392.15 and 103,075.30 is: 154,664.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,841.70 : 391,392.15 = 103,075.30 : x
  2. Step 2: Convert to fraction form
    260,841.70/391,392.15 = 103,075.30/x
  3. Step 3: Cross multiply
    260,841.70x = 391,392.15 × 103,075.30
  4. Step 4: Simplify right side
    260,841.70x = 40,342,863,278.90
  5. Step 5: Solve for x
    x = 40,342,863,278.90/260,841.70
  6. Step 6: Final answer
    x = 154,664.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.