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Finding the Fourth Proportional to 610,447.47, 915,802.43 and 205,679.91

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Solution

The fourth proportional to 610,447.47, 915,802.43 and 205,679.91 is: 308,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,447.47 : 915,802.43 = 205,679.91 : x
  2. Step 2: Convert to fraction form
    610,447.47/915,802.43 = 205,679.91/x
  3. Step 3: Cross multiply
    610,447.47x = 915,802.43 × 205,679.91
  4. Step 4: Simplify right side
    610,447.47x = 188,362,160,351.78
  5. Step 5: Solve for x
    x = 188,362,160,351.78/610,447.47
  6. Step 6: Final answer
    x = 308,564.08

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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.