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Finding the Fourth Proportional to 490,331.40, 735,108.30 and 268,715.40

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Solution

The fourth proportional to 490,331.40, 735,108.30 and 268,715.40 is: 402,860.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,331.40 : 735,108.30 = 268,715.40 : x
  2. Step 2: Convert to fraction form
    490,331.40/735,108.30 = 268,715.40/x
  3. Step 3: Cross multiply
    490,331.40x = 735,108.30 × 268,715.40
  4. Step 4: Simplify right side
    490,331.40x = 197,534,920,877.82
  5. Step 5: Solve for x
    x = 197,534,920,877.82/490,331.40
  6. Step 6: Final answer
    x = 402,860.03

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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.