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Finding the Fourth Proportional to 489,548.80, 734,341.20 and 134,590.56

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Solution

The fourth proportional to 489,548.80, 734,341.20 and 134,590.56 is: 201,890.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,548.80 : 734,341.20 = 134,590.56 : x
  2. Step 2: Convert to fraction form
    489,548.80/734,341.20 = 134,590.56/x
  3. Step 3: Cross multiply
    489,548.80x = 734,341.20 × 134,590.56
  4. Step 4: Simplify right side
    489,548.80x = 98,835,393,339.07
  5. Step 5: Solve for x
    x = 98,835,393,339.07/489,548.80
  6. Step 6: Final answer
    x = 201,890.79

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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.