Home / 309,327.68-426,902.16-173,384.72

Finding the Fourth Proportional to 309,327.68, 426,902.16 and 173,384.72

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Solution

The fourth proportional to 309,327.68, 426,902.16 and 173,384.72 is: 239,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,327.68 : 426,902.16 = 173,384.72 : x
  2. Step 2: Convert to fraction form
    309,327.68/426,902.16 = 173,384.72/x
  3. Step 3: Cross multiply
    309,327.68x = 426,902.16 × 173,384.72
  4. Step 4: Simplify right side
    309,327.68x = 74,018,311,479.00
  5. Step 5: Solve for x
    x = 74,018,311,479.00/309,327.68
  6. Step 6: Final answer
    x = 239,287.71

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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.