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Finding the Fourth Proportional to 610,003.92, 915,128.22 and 210,659.40

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Solution

The fourth proportional to 610,003.92, 915,128.22 and 210,659.40 is: 316,031.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,003.92 : 915,128.22 = 210,659.40 : x
  2. Step 2: Convert to fraction form
    610,003.92/915,128.22 = 210,659.40/x
  3. Step 3: Cross multiply
    610,003.92x = 915,128.22 × 210,659.40
  4. Step 4: Simplify right side
    610,003.92x = 192,780,361,748.27
  5. Step 5: Solve for x
    x = 192,780,361,748.27/610,003.92
  6. Step 6: Final answer
    x = 316,031.35

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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.