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Finding the Fourth Proportional to 536,430.80, 805,164.60 and 326,478.80

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Solution

The fourth proportional to 536,430.80, 805,164.60 and 326,478.80 is: 490,033.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,430.80 : 805,164.60 = 326,478.80 : x
  2. Step 2: Convert to fraction form
    536,430.80/805,164.60 = 326,478.80/x
  3. Step 3: Cross multiply
    536,430.80x = 805,164.60 × 326,478.80
  4. Step 4: Simplify right side
    536,430.80x = 262,869,172,410.48
  5. Step 5: Solve for x
    x = 262,869,172,410.48/536,430.80
  6. Step 6: Final answer
    x = 490,033.71

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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.