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Finding the Fourth Proportional to 209,009.96, 288,440.55 and 118,363.97

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Solution

The fourth proportional to 209,009.96, 288,440.55 and 118,363.97 is: 163,346.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,009.96 : 288,440.55 = 118,363.97 : x
  2. Step 2: Convert to fraction form
    209,009.96/288,440.55 = 118,363.97/x
  3. Step 3: Cross multiply
    209,009.96x = 288,440.55 × 118,363.97
  4. Step 4: Simplify right side
    209,009.96x = 34,140,968,606.98
  5. Step 5: Solve for x
    x = 34,140,968,606.98/209,009.96
  6. Step 6: Final answer
    x = 163,346.14

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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.