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Finding the Fourth Proportional to 260,053.80, 390,080.70 and 230,310.60

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Solution

The fourth proportional to 260,053.80, 390,080.70 and 230,310.60 is: 345,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,053.80 : 390,080.70 = 230,310.60 : x
  2. Step 2: Convert to fraction form
    260,053.80/390,080.70 = 230,310.60/x
  3. Step 3: Cross multiply
    260,053.80x = 390,080.70 × 230,310.60
  4. Step 4: Simplify right side
    260,053.80x = 89,839,720,065.42
  5. Step 5: Solve for x
    x = 89,839,720,065.42/260,053.80
  6. Step 6: Final answer
    x = 345,465.90

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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.