Home / 287,313,812.72-430,970,724.80-68,964,154.83

Finding the Fourth Proportional to 287,313,812.72, 430,970,724.80 and 68,964,154.83

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Solution

The fourth proportional to 287,313,812.72, 430,970,724.80 and 68,964,154.83 is: 103,446,233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,313,812.72 : 430,970,724.80 = 68,964,154.83 : x
  2. Step 2: Convert to fraction form
    287,313,812.72/430,970,724.80 = 68,964,154.83/x
  3. Step 3: Cross multiply
    287,313,812.72x = 430,970,724.80 × 68,964,154.83
  4. Step 4: Simplify right side
    287,313,812.72x = 29,721,531,791,959,700
  5. Step 5: Solve for x
    x = 29,721,531,791,959,700/287,313,812.72
  6. Step 6: Final answer
    x = 103,446,233.62

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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.