Home / 289,515.13-434,251.77-89,830.42

Finding the Fourth Proportional to 289,515.13, 434,251.77 and 89,830.42

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Solution

The fourth proportional to 289,515.13, 434,251.77 and 89,830.42 is: 134,739.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,515.13 : 434,251.77 = 89,830.42 : x
  2. Step 2: Convert to fraction form
    289,515.13/434,251.77 = 89,830.42/x
  3. Step 3: Cross multiply
    289,515.13x = 434,251.77 × 89,830.42
  4. Step 4: Simplify right side
    289,515.13x = 39,009,018,884.84
  5. Step 5: Solve for x
    x = 39,009,018,884.84/289,515.13
  6. Step 6: Final answer
    x = 134,739.14

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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.