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Finding the Fourth Proportional to 260,011.35, 358,811.19 and 145,291.86

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Solution

The fourth proportional to 260,011.35, 358,811.19 and 145,291.86 is: 200,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,011.35 : 358,811.19 = 145,291.86 : x
  2. Step 2: Convert to fraction form
    260,011.35/358,811.19 = 145,291.86/x
  3. Step 3: Cross multiply
    260,011.35x = 358,811.19 × 145,291.86
  4. Step 4: Simplify right side
    260,011.35x = 52,132,345,183.91
  5. Step 5: Solve for x
    x = 52,132,345,183.91/260,011.35
  6. Step 6: Final answer
    x = 200,500.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.