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Finding the Fourth Proportional to 260,265.60, 389,620.80 and 155,030.40

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Solution

The fourth proportional to 260,265.60, 389,620.80 and 155,030.40 is: 232,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,265.60 : 389,620.80 = 155,030.40 : x
  2. Step 2: Convert to fraction form
    260,265.60/389,620.80 = 155,030.40/x
  3. Step 3: Cross multiply
    260,265.60x = 389,620.80 × 155,030.40
  4. Step 4: Simplify right side
    260,265.60x = 60,403,068,472.32
  5. Step 5: Solve for x
    x = 60,403,068,472.32/260,265.60
  6. Step 6: Final answer
    x = 232,082.41

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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.