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Finding the Fourth Proportional to 540,156.40, 810,234.60 and 339,827.20

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Solution

The fourth proportional to 540,156.40, 810,234.60 and 339,827.20 is: 509,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,156.40 : 810,234.60 = 339,827.20 : x
  2. Step 2: Convert to fraction form
    540,156.40/810,234.60 = 339,827.20/x
  3. Step 3: Cross multiply
    540,156.40x = 810,234.60 × 339,827.20
  4. Step 4: Simplify right side
    540,156.40x = 275,339,755,461.12
  5. Step 5: Solve for x
    x = 275,339,755,461.12/540,156.40
  6. Step 6: Final answer
    x = 509,740.80

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Similar ratio
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1.5x scale

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.