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Finding the Fourth Proportional to 486,890.40, 730,335.60 and 154,466.40

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Solution

The fourth proportional to 486,890.40, 730,335.60 and 154,466.40 is: 231,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,890.40 : 730,335.60 = 154,466.40 : x
  2. Step 2: Convert to fraction form
    486,890.40/730,335.60 = 154,466.40/x
  3. Step 3: Cross multiply
    486,890.40x = 730,335.60 × 154,466.40
  4. Step 4: Simplify right side
    486,890.40x = 112,812,310,923.84
  5. Step 5: Solve for x
    x = 112,812,310,923.84/486,890.40
  6. Step 6: Final answer
    x = 231,699.60

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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.