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Finding the Fourth Proportional to 260,368.60, 390,552.90 and 82,893.55

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Solution

The fourth proportional to 260,368.60, 390,552.90 and 82,893.55 is: 124,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,368.60 : 390,552.90 = 82,893.55 : x
  2. Step 2: Convert to fraction form
    260,368.60/390,552.90 = 82,893.55/x
  3. Step 3: Cross multiply
    260,368.60x = 390,552.90 × 82,893.55
  4. Step 4: Simplify right side
    260,368.60x = 32,374,316,343.80
  5. Step 5: Solve for x
    x = 32,374,316,343.80/260,368.60
  6. Step 6: Final answer
    x = 124,340.33

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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.