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Finding the Fourth Proportional to 461,347.21, 636,920.72 and 300,121.57

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Solution

The fourth proportional to 461,347.21, 636,920.72 and 300,121.57 is: 414,337.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,347.21 : 636,920.72 = 300,121.57 : x
  2. Step 2: Convert to fraction form
    461,347.21/636,920.72 = 300,121.57/x
  3. Step 3: Cross multiply
    461,347.21x = 636,920.72 × 300,121.57
  4. Step 4: Simplify right side
    461,347.21x = 191,153,646,451.93
  5. Step 5: Solve for x
    x = 191,153,646,451.93/461,347.21
  6. Step 6: Final answer
    x = 414,337.93

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1.5x scale

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.