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Finding the Fourth Proportional to 442,145.90, 661,807.65 and 348,833.90

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Solution

The fourth proportional to 442,145.90, 661,807.65 and 348,833.90 is: 522,137.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,145.90 : 661,807.65 = 348,833.90 : x
  2. Step 2: Convert to fraction form
    442,145.90/661,807.65 = 348,833.90/x
  3. Step 3: Cross multiply
    442,145.90x = 661,807.65 × 348,833.90
  4. Step 4: Simplify right side
    442,145.90x = 230,860,943,599.34
  5. Step 5: Solve for x
    x = 230,860,943,599.34/442,145.90
  6. Step 6: Final answer
    x = 522,137.47

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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.