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Finding the Fourth Proportional to 289,873.92, 399,412.80 and 269,927.04

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Solution

The fourth proportional to 289,873.92, 399,412.80 and 269,927.04 is: 371,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,873.92 : 399,412.80 = 269,927.04 : x
  2. Step 2: Convert to fraction form
    289,873.92/399,412.80 = 269,927.04/x
  3. Step 3: Cross multiply
    289,873.92x = 399,412.80 × 269,927.04
  4. Step 4: Simplify right side
    289,873.92x = 107,812,314,842.11
  5. Step 5: Solve for x
    x = 107,812,314,842.11/289,873.92
  6. Step 6: Final answer
    x = 371,928.30

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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.