Home / 208,915.10-288,309.45-118,269.42

Finding the Fourth Proportional to 208,915.10, 288,309.45 and 118,269.42

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Solution

The fourth proportional to 208,915.10, 288,309.45 and 118,269.42 is: 163,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,915.10 : 288,309.45 = 118,269.42 : x
  2. Step 2: Convert to fraction form
    208,915.10/288,309.45 = 118,269.42/x
  3. Step 3: Cross multiply
    208,915.10x = 288,309.45 × 118,269.42
  4. Step 4: Simplify right side
    208,915.10x = 34,098,191,432.02
  5. Step 5: Solve for x
    x = 34,098,191,432.02/208,915.10
  6. Step 6: Final answer
    x = 163,215.55

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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.