Home / 309,016.08-426,406.95-173,031.12

Finding the Fourth Proportional to 309,016.08, 426,406.95 and 173,031.12

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Solution

The fourth proportional to 309,016.08, 426,406.95 and 173,031.12 is: 238,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,016.08 : 426,406.95 = 173,031.12 : x
  2. Step 2: Convert to fraction form
    309,016.08/426,406.95 = 173,031.12/x
  3. Step 3: Cross multiply
    309,016.08x = 426,406.95 × 173,031.12
  4. Step 4: Simplify right side
    309,016.08x = 73,781,672,134.28
  5. Step 5: Solve for x
    x = 73,781,672,134.28/309,016.08
  6. Step 6: Final answer
    x = 238,763.21

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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.