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Finding the Fourth Proportional to 610,440.32, 915,365.01 and 210,940.94

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Solution

The fourth proportional to 610,440.32, 915,365.01 and 210,940.94 is: 316,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,440.32 : 915,365.01 = 210,940.94 : x
  2. Step 2: Convert to fraction form
    610,440.32/915,365.01 = 210,940.94/x
  3. Step 3: Cross multiply
    610,440.32x = 915,365.01 × 210,940.94
  4. Step 4: Simplify right side
    610,440.32x = 193,087,955,652.51
  5. Step 5: Solve for x
    x = 193,087,955,652.51/610,440.32
  6. Step 6: Final answer
    x = 316,309.31

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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.