Home / 515,564.19-772,431.26-215,384.13

Finding the Fourth Proportional to 515,564.19, 772,431.26 and 215,384.13

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Solution

The fourth proportional to 515,564.19, 772,431.26 and 215,384.13 is: 322,693.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,564.19 : 772,431.26 = 215,384.13 : x
  2. Step 2: Convert to fraction form
    515,564.19/772,431.26 = 215,384.13/x
  3. Step 3: Cross multiply
    515,564.19x = 772,431.26 × 215,384.13
  4. Step 4: Simplify right side
    515,564.19x = 166,369,433,842.98
  5. Step 5: Solve for x
    x = 166,369,433,842.98/515,564.19
  6. Step 6: Final answer
    x = 322,693.93

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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.