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Finding the Fourth Proportional to 445,878.38, 668,887.29 and 146,290.82

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Solution

The fourth proportional to 445,878.38, 668,887.29 and 146,290.82 is: 219,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,878.38 : 668,887.29 = 146,290.82 : x
  2. Step 2: Convert to fraction form
    445,878.38/668,887.29 = 146,290.82/x
  3. Step 3: Cross multiply
    445,878.38x = 668,887.29 × 146,290.82
  4. Step 4: Simplify right side
    445,878.38x = 97,852,070,986.05
  5. Step 5: Solve for x
    x = 97,852,070,986.05/445,878.38
  6. Step 6: Final answer
    x = 219,459.10

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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.