Home / 208,915.50-288,306.78-118,269.12

Finding the Fourth Proportional to 208,915.50, 288,306.78 and 118,269.12

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Solution

The fourth proportional to 208,915.50, 288,306.78 and 118,269.12 is: 163,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,915.50 : 288,306.78 = 118,269.12 : x
  2. Step 2: Convert to fraction form
    208,915.50/288,306.78 = 118,269.12/x
  3. Step 3: Cross multiply
    208,915.50x = 288,306.78 × 118,269.12
  4. Step 4: Simplify right side
    208,915.50x = 34,097,789,160.63
  5. Step 5: Solve for x
    x = 34,097,789,160.63/208,915.50
  6. Step 6: Final answer
    x = 163,213.30

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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.