Home / 210,428.20-315,434.52-83,992.28

Finding the Fourth Proportional to 210,428.20, 315,434.52 and 83,992.28

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Solution

The fourth proportional to 210,428.20, 315,434.52 and 83,992.28 is: 125,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,428.20 : 315,434.52 = 83,992.28 : x
  2. Step 2: Convert to fraction form
    210,428.20/315,434.52 = 83,992.28/x
  3. Step 3: Cross multiply
    210,428.20x = 315,434.52 × 83,992.28
  4. Step 4: Simplify right side
    210,428.20x = 26,494,064,525.51
  5. Step 5: Solve for x
    x = 26,494,064,525.51/210,428.20
  6. Step 6: Final answer
    x = 125,905.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.