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Finding the Fourth Proportional to 209,364.52, 288,916.86 and 118,728.76

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Solution

The fourth proportional to 209,364.52, 288,916.86 and 118,728.76 is: 163,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,364.52 : 288,916.86 = 118,728.76 : x
  2. Step 2: Convert to fraction form
    209,364.52/288,916.86 = 118,728.76/x
  3. Step 3: Cross multiply
    209,364.52x = 288,916.86 × 118,728.76
  4. Step 4: Simplify right side
    209,364.52x = 34,302,740,530.89
  5. Step 5: Solve for x
    x = 34,302,740,530.89/209,364.52
  6. Step 6: Final answer
    x = 163,842.19

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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.