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Finding the Fourth Proportional to 354,420.60, 530,756.10 and 235,447.80

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Solution

The fourth proportional to 354,420.60, 530,756.10 and 235,447.80 is: 352,590.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,420.60 : 530,756.10 = 235,447.80 : x
  2. Step 2: Convert to fraction form
    354,420.60/530,756.10 = 235,447.80/x
  3. Step 3: Cross multiply
    354,420.60x = 530,756.10 × 235,447.80
  4. Step 4: Simplify right side
    354,420.60x = 124,965,356,081.58
  5. Step 5: Solve for x
    x = 124,965,356,081.58/354,420.60
  6. Step 6: Final answer
    x = 352,590.56

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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.