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Finding the Fourth Proportional to 347,078.40, 520,617.60 and 97,760.40

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Solution

The fourth proportional to 347,078.40, 520,617.60 and 97,760.40 is: 146,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,078.40 : 520,617.60 = 97,760.40 : x
  2. Step 2: Convert to fraction form
    347,078.40/520,617.60 = 97,760.40/x
  3. Step 3: Cross multiply
    347,078.40x = 520,617.60 × 97,760.40
  4. Step 4: Simplify right side
    347,078.40x = 50,895,784,823.04
  5. Step 5: Solve for x
    x = 50,895,784,823.04/347,078.40
  6. Step 6: Final answer
    x = 146,640.60

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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.