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Finding the Fourth Proportional to 245,676.16, 339,006.96 and 138,244.32

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Solution

The fourth proportional to 245,676.16, 339,006.96 and 138,244.32 is: 190,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,676.16 : 339,006.96 = 138,244.32 : x
  2. Step 2: Convert to fraction form
    245,676.16/339,006.96 = 138,244.32/x
  3. Step 3: Cross multiply
    245,676.16x = 339,006.96 × 138,244.32
  4. Step 4: Simplify right side
    245,676.16x = 46,865,786,660.47
  5. Step 5: Solve for x
    x = 46,865,786,660.47/245,676.16
  6. Step 6: Final answer
    x = 190,762.45

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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.