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Finding the Fourth Proportional to 660,357.52, 990,538.70 and 161,721.52

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Solution

The fourth proportional to 660,357.52, 990,538.70 and 161,721.52 is: 242,582.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,357.52 : 990,538.70 = 161,721.52 : x
  2. Step 2: Convert to fraction form
    660,357.52/990,538.70 = 161,721.52/x
  3. Step 3: Cross multiply
    660,357.52x = 990,538.70 × 161,721.52
  4. Step 4: Simplify right side
    660,357.52x = 160,191,424,182.82
  5. Step 5: Solve for x
    x = 160,191,424,182.82/660,357.52
  6. Step 6: Final answer
    x = 242,582.87

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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.