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Finding the Fourth Proportional to 355,247.20, 532,870.80 and 189,359.20

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Solution

The fourth proportional to 355,247.20, 532,870.80 and 189,359.20 is: 284,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,247.20 : 532,870.80 = 189,359.20 : x
  2. Step 2: Convert to fraction form
    355,247.20/532,870.80 = 189,359.20/x
  3. Step 3: Cross multiply
    355,247.20x = 532,870.80 × 189,359.20
  4. Step 4: Simplify right side
    355,247.20x = 100,903,988,391.36
  5. Step 5: Solve for x
    x = 100,903,988,391.36/355,247.20
  6. Step 6: Final answer
    x = 284,038.80

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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.