Home / 289,486.48-434,257.24-89,809.04

Finding the Fourth Proportional to 289,486.48, 434,257.24 and 89,809.04

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Solution

The fourth proportional to 289,486.48, 434,257.24 and 89,809.04 is: 134,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,486.48 : 434,257.24 = 89,809.04 : x
  2. Step 2: Convert to fraction form
    289,486.48/434,257.24 = 89,809.04/x
  3. Step 3: Cross multiply
    289,486.48x = 434,257.24 × 89,809.04
  4. Step 4: Simplify right side
    289,486.48x = 39,000,225,837.45
  5. Step 5: Solve for x
    x = 39,000,225,837.45/289,486.48
  6. Step 6: Final answer
    x = 134,722.10

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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.