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Finding the Fourth Proportional to 253,205.87, 349,411.05 and 138,462.18

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Solution

The fourth proportional to 253,205.87, 349,411.05 and 138,462.18 is: 191,070.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,205.87 : 349,411.05 = 138,462.18 : x
  2. Step 2: Convert to fraction form
    253,205.87/349,411.05 = 138,462.18/x
  3. Step 3: Cross multiply
    253,205.87x = 349,411.05 × 138,462.18
  4. Step 4: Simplify right side
    253,205.87x = 48,380,214,388.80
  5. Step 5: Solve for x
    x = 48,380,214,388.80/253,205.87
  6. Step 6: Final answer
    x = 191,070.67

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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.