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Finding the Fourth Proportional to 260,353.60, 390,355.36 and 102,500.80

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Solution

The fourth proportional to 260,353.60, 390,355.36 and 102,500.80 is: 153,682.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,353.60 : 390,355.36 = 102,500.80 : x
  2. Step 2: Convert to fraction form
    260,353.60/390,355.36 = 102,500.80/x
  3. Step 3: Cross multiply
    260,353.60x = 390,355.36 × 102,500.80
  4. Step 4: Simplify right side
    260,353.60x = 40,011,736,684.29
  5. Step 5: Solve for x
    x = 40,011,736,684.29/260,353.60
  6. Step 6: Final answer
    x = 153,682.29

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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.