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Finding the Fourth Proportional to 340,314.69, 510,472.19 and 140,415.36

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Solution

The fourth proportional to 340,314.69, 510,472.19 and 140,415.36 is: 210,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,314.69 : 510,472.19 = 140,415.36 : x
  2. Step 2: Convert to fraction form
    340,314.69/510,472.19 = 140,415.36/x
  3. Step 3: Cross multiply
    340,314.69x = 510,472.19 × 140,415.36
  4. Step 4: Simplify right side
    340,314.69x = 71,678,135,626.76
  5. Step 5: Solve for x
    x = 71,678,135,626.76/340,314.69
  6. Step 6: Final answer
    x = 210,623.10

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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.