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Finding the Fourth Proportional to 340,019.80, 510,029.70 and 323,690.20

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Solution

The fourth proportional to 340,019.80, 510,029.70 and 323,690.20 is: 485,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,019.80 : 510,029.70 = 323,690.20 : x
  2. Step 2: Convert to fraction form
    340,019.80/510,029.70 = 323,690.20/x
  3. Step 3: Cross multiply
    340,019.80x = 510,029.70 × 323,690.20
  4. Step 4: Simplify right side
    340,019.80x = 165,091,615,598.94
  5. Step 5: Solve for x
    x = 165,091,615,598.94/340,019.80
  6. Step 6: Final answer
    x = 485,535.30

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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.