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Finding the Fourth Proportional to 324,656.60, 486,984.90 and 265,607.60

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Solution

The fourth proportional to 324,656.60, 486,984.90 and 265,607.60 is: 398,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,656.60 : 486,984.90 = 265,607.60 : x
  2. Step 2: Convert to fraction form
    324,656.60/486,984.90 = 265,607.60/x
  3. Step 3: Cross multiply
    324,656.60x = 486,984.90 × 265,607.60
  4. Step 4: Simplify right side
    324,656.60x = 129,346,890,525.24
  5. Step 5: Solve for x
    x = 129,346,890,525.24/324,656.60
  6. Step 6: Final answer
    x = 398,411.40

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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.