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Finding the Fourth Proportional to 421,707.40, 632,852.70 and 303,463.60

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Solution

The fourth proportional to 421,707.40, 632,852.70 and 303,463.60 is: 455,405.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,707.40 : 632,852.70 = 303,463.60 : x
  2. Step 2: Convert to fraction form
    421,707.40/632,852.70 = 303,463.60/x
  3. Step 3: Cross multiply
    421,707.40x = 632,852.70 × 303,463.60
  4. Step 4: Simplify right side
    421,707.40x = 192,047,758,611.72
  5. Step 5: Solve for x
    x = 192,047,758,611.72/421,707.40
  6. Step 6: Final answer
    x = 455,405.24

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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.