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Finding the Fourth Proportional to 421,671.16, 581,559.78 and 300,773.80

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Solution

The fourth proportional to 421,671.16, 581,559.78 and 300,773.80 is: 414,820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,671.16 : 581,559.78 = 300,773.80 : x
  2. Step 2: Convert to fraction form
    421,671.16/581,559.78 = 300,773.80/x
  3. Step 3: Cross multiply
    421,671.16x = 581,559.78 × 300,773.80
  4. Step 4: Simplify right side
    421,671.16x = 174,917,944,957.76
  5. Step 5: Solve for x
    x = 174,917,944,957.76/421,671.16
  6. Step 6: Final answer
    x = 414,820.75

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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.