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Finding the Fourth Proportional to 289,904.30, 434,856.45 and 248,432.30

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Solution

The fourth proportional to 289,904.30, 434,856.45 and 248,432.30 is: 372,648.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,904.30 : 434,856.45 = 248,432.30 : x
  2. Step 2: Convert to fraction form
    289,904.30/434,856.45 = 248,432.30/x
  3. Step 3: Cross multiply
    289,904.30x = 434,856.45 × 248,432.30
  4. Step 4: Simplify right side
    289,904.30x = 108,032,388,043.34
  5. Step 5: Solve for x
    x = 108,032,388,043.34/289,904.30
  6. Step 6: Final answer
    x = 372,648.45

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1.5x scale

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.