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Finding the Fourth Proportional to 260,220.60, 390,330.90 and 155,244.60

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Solution

The fourth proportional to 260,220.60, 390,330.90 and 155,244.60 is: 232,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,220.60 : 390,330.90 = 155,244.60 : x
  2. Step 2: Convert to fraction form
    260,220.60/390,330.90 = 155,244.60/x
  3. Step 3: Cross multiply
    260,220.60x = 390,330.90 × 155,244.60
  4. Step 4: Simplify right side
    260,220.60x = 60,596,764,438.14
  5. Step 5: Solve for x
    x = 60,596,764,438.14/260,220.60
  6. Step 6: Final answer
    x = 232,866.90

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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.