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Finding the Fourth Proportional to 340,566.90, 510,850.35 and 287,422.80

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Solution

The fourth proportional to 340,566.90, 510,850.35 and 287,422.80 is: 431,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,566.90 : 510,850.35 = 287,422.80 : x
  2. Step 2: Convert to fraction form
    340,566.90/510,850.35 = 287,422.80/x
  3. Step 3: Cross multiply
    340,566.90x = 510,850.35 × 287,422.80
  4. Step 4: Simplify right side
    340,566.90x = 146,830,037,977.98
  5. Step 5: Solve for x
    x = 146,830,037,977.98/340,566.90
  6. Step 6: Final answer
    x = 431,134.20

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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.