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Finding the Fourth Proportional to 289,700.80, 434,032.80 and 248,228.80

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Solution

The fourth proportional to 289,700.80, 434,032.80 and 248,228.80 is: 371,899.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,700.80 : 434,032.80 = 248,228.80 : x
  2. Step 2: Convert to fraction form
    289,700.80/434,032.80 = 248,228.80/x
  3. Step 3: Cross multiply
    289,700.80x = 434,032.80 × 248,228.80
  4. Step 4: Simplify right side
    289,700.80x = 107,739,441,104.64
  5. Step 5: Solve for x
    x = 107,739,441,104.64/289,700.80
  6. Step 6: Final answer
    x = 371,899.01

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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.