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Finding the Fourth Proportional to 343,465.40, 515,246.70 and 106,783.40

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Solution

The fourth proportional to 343,465.40, 515,246.70 and 106,783.40 is: 160,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,465.40 : 515,246.70 = 106,783.40 : x
  2. Step 2: Convert to fraction form
    343,465.40/515,246.70 = 106,783.40/x
  3. Step 3: Cross multiply
    343,465.40x = 515,246.70 × 106,783.40
  4. Step 4: Simplify right side
    343,465.40x = 55,019,794,464.78
  5. Step 5: Solve for x
    x = 55,019,794,464.78/343,465.40
  6. Step 6: Final answer
    x = 160,190.21

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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.