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Finding the Fourth Proportional to 340,319.46, 510,479.34 and 140,420.22

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Solution

The fourth proportional to 340,319.46, 510,479.34 and 140,420.22 is: 210,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,319.46 : 510,479.34 = 140,420.22 : x
  2. Step 2: Convert to fraction form
    340,319.46/510,479.34 = 140,420.22/x
  3. Step 3: Cross multiply
    340,319.46x = 510,479.34 × 140,420.22
  4. Step 4: Simplify right side
    340,319.46x = 71,681,621,228.25
  5. Step 5: Solve for x
    x = 71,681,621,228.25/340,319.46
  6. Step 6: Final answer
    x = 210,630.39

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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.