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Finding the Fourth Proportional to 210,488.43, 315,735.35 and 70,247.06

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Solution

The fourth proportional to 210,488.43, 315,735.35 and 70,247.06 is: 105,371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,488.43 : 315,735.35 = 70,247.06 : x
  2. Step 2: Convert to fraction form
    210,488.43/315,735.35 = 70,247.06/x
  3. Step 3: Cross multiply
    210,488.43x = 315,735.35 × 70,247.06
  4. Step 4: Simplify right side
    210,488.43x = 22,179,478,145.66
  5. Step 5: Solve for x
    x = 22,179,478,145.66/210,488.43
  6. Step 6: Final answer
    x = 105,371.48

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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.