Home / 386,331.40-579,497.10-105,838.60

Finding the Fourth Proportional to 386,331.40, 579,497.10 and 105,838.60

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Solution

The fourth proportional to 386,331.40, 579,497.10 and 105,838.60 is: 158,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,331.40 : 579,497.10 = 105,838.60 : x
  2. Step 2: Convert to fraction form
    386,331.40/579,497.10 = 105,838.60/x
  3. Step 3: Cross multiply
    386,331.40x = 579,497.10 × 105,838.60
  4. Step 4: Simplify right side
    386,331.40x = 61,333,161,768.06
  5. Step 5: Solve for x
    x = 61,333,161,768.06/386,331.40
  6. Step 6: Final answer
    x = 158,757.90

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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.