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Finding the Fourth Proportional to 628,765.60, 943,148.40 and 202,300.60

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Solution

The fourth proportional to 628,765.60, 943,148.40 and 202,300.60 is: 303,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,765.60 : 943,148.40 = 202,300.60 : x
  2. Step 2: Convert to fraction form
    628,765.60/943,148.40 = 202,300.60/x
  3. Step 3: Cross multiply
    628,765.60x = 943,148.40 × 202,300.60
  4. Step 4: Simplify right side
    628,765.60x = 190,799,487,209.04
  5. Step 5: Solve for x
    x = 190,799,487,209.04/628,765.60
  6. Step 6: Final answer
    x = 303,450.90

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Double scale
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Similar ratio
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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.