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Finding the Fourth Proportional to 349,846.10, 524,807.31 and 128,230.10

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Solution

The fourth proportional to 349,846.10, 524,807.31 and 128,230.10 is: 192,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,846.10 : 524,807.31 = 128,230.10 : x
  2. Step 2: Convert to fraction form
    349,846.10/524,807.31 = 128,230.10/x
  3. Step 3: Cross multiply
    349,846.10x = 524,807.31 × 128,230.10
  4. Step 4: Simplify right side
    349,846.10x = 67,296,093,842.03
  5. Step 5: Solve for x
    x = 67,296,093,842.03/349,846.10
  6. Step 6: Final answer
    x = 192,359.14

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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.