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Finding the Fourth Proportional to 209,600.72, 289,223.88 and 118,967.12

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Solution

The fourth proportional to 209,600.72, 289,223.88 and 118,967.12 is: 164,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,600.72 : 289,223.88 = 118,967.12 : x
  2. Step 2: Convert to fraction form
    209,600.72/289,223.88 = 118,967.12/x
  3. Step 3: Cross multiply
    209,600.72x = 289,223.88 × 118,967.12
  4. Step 4: Simplify right side
    209,600.72x = 34,408,132,038.83
  5. Step 5: Solve for x
    x = 34,408,132,038.83/209,600.72
  6. Step 6: Final answer
    x = 164,160.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.