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Finding the Fourth Proportional to 445,443.60, 668,246.40 and 145,840.80

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Solution

The fourth proportional to 445,443.60, 668,246.40 and 145,840.80 is: 218,787.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,443.60 : 668,246.40 = 145,840.80 : x
  2. Step 2: Convert to fraction form
    445,443.60/668,246.40 = 145,840.80/x
  3. Step 3: Cross multiply
    445,443.60x = 668,246.40 × 145,840.80
  4. Step 4: Simplify right side
    445,443.60x = 97,457,589,573.12
  5. Step 5: Solve for x
    x = 97,457,589,573.12/445,443.60
  6. Step 6: Final answer
    x = 218,787.72

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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.