Home / 421,256.91-631,885.36-140,774.16

Finding the Fourth Proportional to 421,256.91, 631,885.36 and 140,774.16

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Solution

The fourth proportional to 421,256.91, 631,885.36 and 140,774.16 is: 211,161.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,256.91 : 631,885.36 = 140,774.16 : x
  2. Step 2: Convert to fraction form
    421,256.91/631,885.36 = 140,774.16/x
  3. Step 3: Cross multiply
    421,256.91x = 631,885.36 × 140,774.16
  4. Step 4: Simplify right side
    421,256.91x = 88,953,128,576.70
  5. Step 5: Solve for x
    x = 88,953,128,576.70/421,256.91
  6. Step 6: Final answer
    x = 211,161.24

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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.