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Finding the Fourth Proportional to 208,878.17, 288,147.04 and 140,809.01

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Solution

The fourth proportional to 208,878.17, 288,147.04 and 140,809.01 is: 194,245.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,878.17 : 288,147.04 = 140,809.01 : x
  2. Step 2: Convert to fraction form
    208,878.17/288,147.04 = 140,809.01/x
  3. Step 3: Cross multiply
    208,878.17x = 288,147.04 × 140,809.01
  4. Step 4: Simplify right side
    208,878.17x = 40,573,697,644.07
  5. Step 5: Solve for x
    x = 40,573,697,644.07/208,878.17
  6. Step 6: Final answer
    x = 194,245.76

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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.