Home / 258,534.78-356,692.23-210,705.90

Finding the Fourth Proportional to 258,534.78, 356,692.23 and 210,705.90

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Solution

The fourth proportional to 258,534.78, 356,692.23 and 210,705.90 is: 290,704.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,534.78 : 356,692.23 = 210,705.90 : x
  2. Step 2: Convert to fraction form
    258,534.78/356,692.23 = 210,705.90/x
  3. Step 3: Cross multiply
    258,534.78x = 356,692.23 × 210,705.90
  4. Step 4: Simplify right side
    258,534.78x = 75,157,157,345.16
  5. Step 5: Solve for x
    x = 75,157,157,345.16/258,534.78
  6. Step 6: Final answer
    x = 290,704.24

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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.