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Finding the Fourth Proportional to 399,572.76, 598,985.47 and 146,785.37

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Solution

The fourth proportional to 399,572.76, 598,985.47 and 146,785.37 is: 220,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,572.76 : 598,985.47 = 146,785.37 : x
  2. Step 2: Convert to fraction form
    399,572.76/598,985.47 = 146,785.37/x
  3. Step 3: Cross multiply
    399,572.76x = 598,985.47 × 146,785.37
  4. Step 4: Simplify right side
    399,572.76x = 87,922,305,255.40
  5. Step 5: Solve for x
    x = 87,922,305,255.40/399,572.76
  6. Step 6: Final answer
    x = 220,040.79

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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.