Home / 210,255.36-315,433.24-70,015.20

Finding the Fourth Proportional to 210,255.36, 315,433.24 and 70,015.20

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Solution

The fourth proportional to 210,255.36, 315,433.24 and 70,015.20 is: 105,039.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,255.36 : 315,433.24 = 70,015.20 : x
  2. Step 2: Convert to fraction form
    210,255.36/315,433.24 = 70,015.20/x
  3. Step 3: Cross multiply
    210,255.36x = 315,433.24 × 70,015.20
  4. Step 4: Simplify right side
    210,255.36x = 22,085,121,385.25
  5. Step 5: Solve for x
    x = 22,085,121,385.25/210,255.36
  6. Step 6: Final answer
    x = 105,039.52

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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.