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Finding the Fourth Proportional to 445,829.80, 668,841.90 and 146,259.40

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Solution

The fourth proportional to 445,829.80, 668,841.90 and 146,259.40 is: 219,420.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,829.80 : 668,841.90 = 146,259.40 : x
  2. Step 2: Convert to fraction form
    445,829.80/668,841.90 = 146,259.40/x
  3. Step 3: Cross multiply
    445,829.80x = 668,841.90 × 146,259.40
  4. Step 4: Simplify right side
    445,829.80x = 97,824,414,988.86
  5. Step 5: Solve for x
    x = 97,824,414,988.86/445,829.80
  6. Step 6: Final answer
    x = 219,420.99

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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.