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Finding the Fourth Proportional to 340,307.20, 510,460.96 and 140,407.88

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Solution

The fourth proportional to 340,307.20, 510,460.96 and 140,407.88 is: 210,611.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,307.20 : 510,460.96 = 140,407.88 : x
  2. Step 2: Convert to fraction form
    340,307.20/510,460.96 = 140,407.88/x
  3. Step 3: Cross multiply
    340,307.20x = 510,460.96 × 140,407.88
  4. Step 4: Simplify right side
    340,307.20x = 71,672,741,216.36
  5. Step 5: Solve for x
    x = 71,672,741,216.36/340,307.20
  6. Step 6: Final answer
    x = 210,611.89

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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.