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Finding the Fourth Proportional to 260,737.60, 391,106.40 and 83,257.60

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Solution

The fourth proportional to 260,737.60, 391,106.40 and 83,257.60 is: 124,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,737.60 : 391,106.40 = 83,257.60 : x
  2. Step 2: Convert to fraction form
    260,737.60/391,106.40 = 83,257.60/x
  3. Step 3: Cross multiply
    260,737.60x = 391,106.40 × 83,257.60
  4. Step 4: Simplify right side
    260,737.60x = 32,562,580,208.64
  5. Step 5: Solve for x
    x = 32,562,580,208.64/260,737.60
  6. Step 6: Final answer
    x = 124,886.40

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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.