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Finding the Fourth Proportional to 309,336.68, 426,914.58 and 173,393.72

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Solution

The fourth proportional to 309,336.68, 426,914.58 and 173,393.72 is: 239,300.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,336.68 : 426,914.58 = 173,393.72 : x
  2. Step 2: Convert to fraction form
    309,336.68/426,914.58 = 173,393.72/x
  3. Step 3: Cross multiply
    309,336.68x = 426,914.58 × 173,393.72
  4. Step 4: Simplify right side
    309,336.68x = 74,024,307,148.44
  5. Step 5: Solve for x
    x = 74,024,307,148.44/309,336.68
  6. Step 6: Final answer
    x = 239,300.13

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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.