Home / 386,174.71-579,260.91-97,985.79

Finding the Fourth Proportional to 386,174.71, 579,260.91 and 97,985.79

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Solution

The fourth proportional to 386,174.71, 579,260.91 and 97,985.79 is: 146,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,174.71 : 579,260.91 = 97,985.79 : x
  2. Step 2: Convert to fraction form
    386,174.71/579,260.91 = 97,985.79/x
  3. Step 3: Cross multiply
    386,174.71x = 579,260.91 × 97,985.79
  4. Step 4: Simplify right side
    386,174.71x = 56,759,339,085.66
  5. Step 5: Solve for x
    x = 56,759,339,085.66/386,174.71
  6. Step 6: Final answer
    x = 146,978.40

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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.