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Finding the Fourth Proportional to 280,703.52, 421,076.61 and 93,715.02

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Solution

The fourth proportional to 280,703.52, 421,076.61 and 93,715.02 is: 140,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,703.52 : 421,076.61 = 93,715.02 : x
  2. Step 2: Convert to fraction form
    280,703.52/421,076.61 = 93,715.02/x
  3. Step 3: Cross multiply
    280,703.52x = 421,076.61 × 93,715.02
  4. Step 4: Simplify right side
    280,703.52x = 39,461,202,927.68
  5. Step 5: Solve for x
    x = 39,461,202,927.68/280,703.52
  6. Step 6: Final answer
    x = 140,579.65

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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.