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Finding the Fourth Proportional to 354,650.80, 531,101.40 and 265,421.20

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Solution

The fourth proportional to 354,650.80, 531,101.40 and 265,421.20 is: 397,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,650.80 : 531,101.40 = 265,421.20 : x
  2. Step 2: Convert to fraction form
    354,650.80/531,101.40 = 265,421.20/x
  3. Step 3: Cross multiply
    354,650.80x = 531,101.40 × 265,421.20
  4. Step 4: Simplify right side
    354,650.80x = 140,965,570,909.68
  5. Step 5: Solve for x
    x = 140,965,570,909.68/354,650.80
  6. Step 6: Final answer
    x = 397,477.10

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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.