Home / 421,117.44-631,676.16-210,543.36

Finding the Fourth Proportional to 421,117.44, 631,676.16 and 210,543.36

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Solution

The fourth proportional to 421,117.44, 631,676.16 and 210,543.36 is: 315,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,117.44 : 631,676.16 = 210,543.36 : x
  2. Step 2: Convert to fraction form
    421,117.44/631,676.16 = 210,543.36/x
  3. Step 3: Cross multiply
    421,117.44x = 631,676.16 × 210,543.36
  4. Step 4: Simplify right side
    421,117.44x = 132,995,221,158.30
  5. Step 5: Solve for x
    x = 132,995,221,158.30/421,117.44
  6. Step 6: Final answer
    x = 315,815.04

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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.