Home / 409,116.48-613,758.40-172,459.20

Finding the Fourth Proportional to 409,116.48, 613,758.40 and 172,459.20

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Solution

The fourth proportional to 409,116.48, 613,758.40 and 172,459.20 is: 258,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,116.48 : 613,758.40 = 172,459.20 : x
  2. Step 2: Convert to fraction form
    409,116.48/613,758.40 = 172,459.20/x
  3. Step 3: Cross multiply
    409,116.48x = 613,758.40 × 172,459.20
  4. Step 4: Simplify right side
    409,116.48x = 105,848,282,657.28
  5. Step 5: Solve for x
    x = 105,848,282,657.28/409,116.48
  6. Step 6: Final answer
    x = 258,724.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.