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Finding the Fourth Proportional to 239,211.60, 358,817.40 and 200,720.40

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Solution

The fourth proportional to 239,211.60, 358,817.40 and 200,720.40 is: 301,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,211.60 : 358,817.40 = 200,720.40 : x
  2. Step 2: Convert to fraction form
    239,211.60/358,817.40 = 200,720.40/x
  3. Step 3: Cross multiply
    239,211.60x = 358,817.40 × 200,720.40
  4. Step 4: Simplify right side
    239,211.60x = 72,021,972,054.96
  5. Step 5: Solve for x
    x = 72,021,972,054.96/239,211.60
  6. Step 6: Final answer
    x = 301,080.60

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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.