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Finding the Fourth Proportional to 260,001.20, 389,345.70 and 207,513.20

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Solution

The fourth proportional to 260,001.20, 389,345.70 and 207,513.20 is: 310,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,001.20 : 389,345.70 = 207,513.20 : x
  2. Step 2: Convert to fraction form
    260,001.20/389,345.70 = 207,513.20/x
  3. Step 3: Cross multiply
    260,001.20x = 389,345.70 × 207,513.20
  4. Step 4: Simplify right side
    260,001.20x = 80,794,372,113.24
  5. Step 5: Solve for x
    x = 80,794,372,113.24/260,001.20
  6. Step 6: Final answer
    x = 310,746.15

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1.5x scale

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.