Home / 289,678.23-434,550.15-259,913.16

Finding the Fourth Proportional to 289,678.23, 434,550.15 and 259,913.16

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Solution

The fourth proportional to 289,678.23, 434,550.15 and 259,913.16 is: 389,899.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,678.23 : 434,550.15 = 259,913.16 : x
  2. Step 2: Convert to fraction form
    289,678.23/434,550.15 = 259,913.16/x
  3. Step 3: Cross multiply
    289,678.23x = 434,550.15 × 259,913.16
  4. Step 4: Simplify right side
    289,678.23x = 112,945,302,664.97
  5. Step 5: Solve for x
    x = 112,945,302,664.97/289,678.23
  6. Step 6: Final answer
    x = 389,899.17

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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.