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Finding the Fourth Proportional to 309,230.66, 426,739.92 and 173,264.88

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Solution

The fourth proportional to 309,230.66, 426,739.92 and 173,264.88 is: 239,106.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,230.66 : 426,739.92 = 173,264.88 : x
  2. Step 2: Convert to fraction form
    309,230.66/426,739.92 = 173,264.88/x
  3. Step 3: Cross multiply
    309,230.66x = 426,739.92 × 173,264.88
  4. Step 4: Simplify right side
    309,230.66x = 73,939,041,030.01
  5. Step 5: Solve for x
    x = 73,939,041,030.01/309,230.66
  6. Step 6: Final answer
    x = 239,106.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.