Home / 309,281.40-426,838.32-173,338.38

Finding the Fourth Proportional to 309,281.40, 426,838.32 and 173,338.38

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Solution

The fourth proportional to 309,281.40, 426,838.32 and 173,338.38 is: 239,223.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,281.40 : 426,838.32 = 173,338.38 : x
  2. Step 2: Convert to fraction form
    309,281.40/426,838.32 = 173,338.38/x
  3. Step 3: Cross multiply
    309,281.40x = 426,838.32 × 173,338.38
  4. Step 4: Simplify right side
    309,281.40x = 73,987,462,910.72
  5. Step 5: Solve for x
    x = 73,987,462,910.72/309,281.40
  6. Step 6: Final answer
    x = 239,223.77

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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.