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Finding the Fourth Proportional to 628,558.60, 942,837.90 and 229,212.40

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Solution

The fourth proportional to 628,558.60, 942,837.90 and 229,212.40 is: 343,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,558.60 : 942,837.90 = 229,212.40 : x
  2. Step 2: Convert to fraction form
    628,558.60/942,837.90 = 229,212.40/x
  3. Step 3: Cross multiply
    628,558.60x = 942,837.90 × 229,212.40
  4. Step 4: Simplify right side
    628,558.60x = 216,110,137,869.96
  5. Step 5: Solve for x
    x = 216,110,137,869.96/628,558.60
  6. Step 6: Final answer
    x = 343,818.60

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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.