Home / 309,045.68-426,434.32-180,005.39

Finding the Fourth Proportional to 309,045.68, 426,434.32 and 180,005.39

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Solution

The fourth proportional to 309,045.68, 426,434.32 and 180,005.39 is: 248,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,045.68 : 426,434.32 = 180,005.39 : x
  2. Step 2: Convert to fraction form
    309,045.68/426,434.32 = 180,005.39/x
  3. Step 3: Cross multiply
    309,045.68x = 426,434.32 × 180,005.39
  4. Step 4: Simplify right side
    309,045.68x = 76,760,475,772.95
  5. Step 5: Solve for x
    x = 76,760,475,772.95/309,045.68
  6. Step 6: Final answer
    x = 248,379.06

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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.