Home / 309,330.36-426,911.32-173,401.04

Finding the Fourth Proportional to 309,330.36, 426,911.32 and 173,401.04

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Solution

The fourth proportional to 309,330.36, 426,911.32 and 173,401.04 is: 239,313.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,330.36 : 426,911.32 = 173,401.04 : x
  2. Step 2: Convert to fraction form
    309,330.36/426,911.32 = 173,401.04/x
  3. Step 3: Cross multiply
    309,330.36x = 426,911.32 × 173,401.04
  4. Step 4: Simplify right side
    309,330.36x = 74,026,866,875.77
  5. Step 5: Solve for x
    x = 74,026,866,875.77/309,330.36
  6. Step 6: Final answer
    x = 239,313.29

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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.