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Finding the Fourth Proportional to 260,021.11, 358,822.26 and 145,300.70

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Solution

The fourth proportional to 260,021.11, 358,822.26 and 145,300.70 is: 200,511.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,021.11 : 358,822.26 = 145,300.70 : x
  2. Step 2: Convert to fraction form
    260,021.11/358,822.26 = 145,300.70/x
  3. Step 3: Cross multiply
    260,021.11x = 358,822.26 × 145,300.70
  4. Step 4: Simplify right side
    260,021.11x = 52,137,124,701.22
  5. Step 5: Solve for x
    x = 52,137,124,701.22/260,021.11
  6. Step 6: Final answer
    x = 200,511.12

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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.