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Finding the Fourth Proportional to 245,773.35, 339,169.68 and 138,322.67

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Solution

The fourth proportional to 245,773.35, 339,169.68 and 138,322.67 is: 190,886.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,773.35 : 339,169.68 = 138,322.67 : x
  2. Step 2: Convert to fraction form
    245,773.35/339,169.68 = 138,322.67/x
  3. Step 3: Cross multiply
    245,773.35x = 339,169.68 × 138,322.67
  4. Step 4: Simplify right side
    245,773.35x = 46,914,854,024.80
  5. Step 5: Solve for x
    x = 46,914,854,024.80/245,773.35
  6. Step 6: Final answer
    x = 190,886.66

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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.