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Finding the Fourth Proportional to 210,786.98, 290,980.92 and 134,408.45

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Solution

The fourth proportional to 210,786.98, 290,980.92 and 134,408.45 is: 185,544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,786.98 : 290,980.92 = 134,408.45 : x
  2. Step 2: Convert to fraction form
    210,786.98/290,980.92 = 134,408.45/x
  3. Step 3: Cross multiply
    210,786.98x = 290,980.92 × 134,408.45
  4. Step 4: Simplify right side
    210,786.98x = 39,110,294,436.77
  5. Step 5: Solve for x
    x = 39,110,294,436.77/210,786.98
  6. Step 6: Final answer
    x = 185,544.17

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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.