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Finding the Fourth Proportional to 445,000.18, 667,541.28 and 145,482.34

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Solution

The fourth proportional to 445,000.18, 667,541.28 and 145,482.34 is: 218,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,000.18 : 667,541.28 = 145,482.34 : x
  2. Step 2: Convert to fraction form
    445,000.18/667,541.28 = 145,482.34/x
  3. Step 3: Cross multiply
    445,000.18x = 667,541.28 × 145,482.34
  4. Step 4: Simplify right side
    445,000.18x = 97,115,467,461.00
  5. Step 5: Solve for x
    x = 97,115,467,461.00/445,000.18
  6. Step 6: Final answer
    x = 218,236.92

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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.