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Finding the Fourth Proportional to 339,784.84, 509,674.02 and 90,466.84

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Solution

The fourth proportional to 339,784.84, 509,674.02 and 90,466.84 is: 135,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,784.84 : 509,674.02 = 90,466.84 : x
  2. Step 2: Convert to fraction form
    339,784.84/509,674.02 = 90,466.84/x
  3. Step 3: Cross multiply
    339,784.84x = 509,674.02 × 90,466.84
  4. Step 4: Simplify right side
    339,784.84x = 46,108,598,019.50
  5. Step 5: Solve for x
    x = 46,108,598,019.50/339,784.84
  6. Step 6: Final answer
    x = 135,699.40

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Double scale
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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.