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Finding the Fourth Proportional to 421,545.09, 632,350.62 and 122,030.16

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Solution

The fourth proportional to 421,545.09, 632,350.62 and 122,030.16 is: 183,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,545.09 : 632,350.62 = 122,030.16 : x
  2. Step 2: Convert to fraction form
    421,545.09/632,350.62 = 122,030.16/x
  3. Step 3: Cross multiply
    421,545.09x = 632,350.62 × 122,030.16
  4. Step 4: Simplify right side
    421,545.09x = 77,165,847,334.70
  5. Step 5: Solve for x
    x = 77,165,847,334.70/421,545.09
  6. Step 6: Final answer
    x = 183,054.79

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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.