Home / 210,319.72-315,312.06-121,472.68

Finding the Fourth Proportional to 210,319.72, 315,312.06 and 121,472.68

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Solution

The fourth proportional to 210,319.72, 315,312.06 and 121,472.68 is: 182,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,319.72 : 315,312.06 = 121,472.68 : x
  2. Step 2: Convert to fraction form
    210,319.72/315,312.06 = 121,472.68/x
  3. Step 3: Cross multiply
    210,319.72x = 315,312.06 × 121,472.68
  4. Step 4: Simplify right side
    210,319.72x = 38,301,800,964.52
  5. Step 5: Solve for x
    x = 38,301,800,964.52/210,319.72
  6. Step 6: Final answer
    x = 182,112.27

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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.