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Finding the Fourth Proportional to 289,497.80, 434,093.10 and 102,515.40

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Solution

The fourth proportional to 289,497.80, 434,093.10 and 102,515.40 is: 153,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,497.80 : 434,093.10 = 102,515.40 : x
  2. Step 2: Convert to fraction form
    289,497.80/434,093.10 = 102,515.40/x
  3. Step 3: Cross multiply
    289,497.80x = 434,093.10 × 102,515.40
  4. Step 4: Simplify right side
    289,497.80x = 44,501,227,783.74
  5. Step 5: Solve for x
    x = 44,501,227,783.74/289,497.80
  6. Step 6: Final answer
    x = 153,718.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.