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Finding the Fourth Proportional to 389,364.80, 584,047.20 and 350,043.20

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Solution

The fourth proportional to 389,364.80, 584,047.20 and 350,043.20 is: 525,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,364.80 : 584,047.20 = 350,043.20 : x
  2. Step 2: Convert to fraction form
    389,364.80/584,047.20 = 350,043.20/x
  3. Step 3: Cross multiply
    389,364.80x = 584,047.20 × 350,043.20
  4. Step 4: Simplify right side
    389,364.80x = 204,441,750,839.04
  5. Step 5: Solve for x
    x = 204,441,750,839.04/389,364.80
  6. Step 6: Final answer
    x = 525,064.80

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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.