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Finding the Fourth Proportional to 354,620.80, 531,931.20 and 344,779.30

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Solution

The fourth proportional to 354,620.80, 531,931.20 and 344,779.30 is: 517,168.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,620.80 : 531,931.20 = 344,779.30 : x
  2. Step 2: Convert to fraction form
    354,620.80/531,931.20 = 344,779.30/x
  3. Step 3: Cross multiply
    354,620.80x = 531,931.20 × 344,779.30
  4. Step 4: Simplify right side
    354,620.80x = 183,398,866,784.16
  5. Step 5: Solve for x
    x = 183,398,866,784.16/354,620.80
  6. Step 6: Final answer
    x = 517,168.95

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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.