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Finding the Fourth Proportional to 260,047.20, 390,200.40 and 147,813.60

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Solution

The fourth proportional to 260,047.20, 390,200.40 and 147,813.60 is: 221,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,047.20 : 390,200.40 = 147,813.60 : x
  2. Step 2: Convert to fraction form
    260,047.20/390,200.40 = 147,813.60/x
  3. Step 3: Cross multiply
    260,047.20x = 390,200.40 × 147,813.60
  4. Step 4: Simplify right side
    260,047.20x = 57,676,925,845.44
  5. Step 5: Solve for x
    x = 57,676,925,845.44/260,047.20
  6. Step 6: Final answer
    x = 221,794.07

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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.