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Finding the Fourth Proportional to 421,707.04, 581,350.41 and 300,638.13

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Solution

The fourth proportional to 421,707.04, 581,350.41 and 300,638.13 is: 414,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,707.04 : 581,350.41 = 300,638.13 : x
  2. Step 2: Convert to fraction form
    421,707.04/581,350.41 = 300,638.13/x
  3. Step 3: Cross multiply
    421,707.04x = 581,350.41 × 300,638.13
  4. Step 4: Simplify right side
    421,707.04x = 174,776,102,648.94
  5. Step 5: Solve for x
    x = 174,776,102,648.94/421,707.04
  6. Step 6: Final answer
    x = 414,449.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.