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Finding the Fourth Proportional to 361,645.20, 542,467.80 and 346,287.60

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Solution

The fourth proportional to 361,645.20, 542,467.80 and 346,287.60 is: 519,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,645.20 : 542,467.80 = 346,287.60 : x
  2. Step 2: Convert to fraction form
    361,645.20/542,467.80 = 346,287.60/x
  3. Step 3: Cross multiply
    361,645.20x = 542,467.80 × 346,287.60
  4. Step 4: Simplify right side
    361,645.20x = 187,849,872,539.28
  5. Step 5: Solve for x
    x = 187,849,872,539.28/361,645.20
  6. Step 6: Final answer
    x = 519,431.40

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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.