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Finding the Fourth Proportional to 421,663.80, 632,603.70 and 243,852.60

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Solution

The fourth proportional to 421,663.80, 632,603.70 and 243,852.60 is: 365,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,663.80 : 632,603.70 = 243,852.60 : x
  2. Step 2: Convert to fraction form
    421,663.80/632,603.70 = 243,852.60/x
  3. Step 3: Cross multiply
    421,663.80x = 632,603.70 × 243,852.60
  4. Step 4: Simplify right side
    421,663.80x = 154,262,057,014.62
  5. Step 5: Solve for x
    x = 154,262,057,014.62/421,663.80
  6. Step 6: Final answer
    x = 365,841.36

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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.