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Finding the Fourth Proportional to 347,685.40, 522,161.70 and 304,139.80

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Solution

The fourth proportional to 347,685.40, 522,161.70 and 304,139.80 is: 456,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,685.40 : 522,161.70 = 304,139.80 : x
  2. Step 2: Convert to fraction form
    347,685.40/522,161.70 = 304,139.80/x
  3. Step 3: Cross multiply
    347,685.40x = 522,161.70 × 304,139.80
  4. Step 4: Simplify right side
    347,685.40x = 158,810,155,005.66
  5. Step 5: Solve for x
    x = 158,810,155,005.66/347,685.40
  6. Step 6: Final answer
    x = 456,763.95

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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.