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Finding the Fourth Proportional to 369,529.20, 554,293.80 and 209,440.80

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Solution

The fourth proportional to 369,529.20, 554,293.80 and 209,440.80 is: 314,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,529.20 : 554,293.80 = 209,440.80 : x
  2. Step 2: Convert to fraction form
    369,529.20/554,293.80 = 209,440.80/x
  3. Step 3: Cross multiply
    369,529.20x = 554,293.80 × 209,440.80
  4. Step 4: Simplify right side
    369,529.20x = 116,091,736,907.04
  5. Step 5: Solve for x
    x = 116,091,736,907.04/369,529.20
  6. Step 6: Final answer
    x = 314,161.20

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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.