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Finding the Fourth Proportional to 260,522.40, 390,826.80 and 110,834.40

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Solution

The fourth proportional to 260,522.40, 390,826.80 and 110,834.40 is: 166,269.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,522.40 : 390,826.80 = 110,834.40 : x
  2. Step 2: Convert to fraction form
    260,522.40/390,826.80 = 110,834.40/x
  3. Step 3: Cross multiply
    260,522.40x = 390,826.80 × 110,834.40
  4. Step 4: Simplify right side
    260,522.40x = 43,317,053,881.92
  5. Step 5: Solve for x
    x = 43,317,053,881.92/260,522.40
  6. Step 6: Final answer
    x = 166,269.98

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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.