Home / 289,678.14-434,637.19-156,401.75

Finding the Fourth Proportional to 289,678.14, 434,637.19 and 156,401.75

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Solution

The fourth proportional to 289,678.14, 434,637.19 and 156,401.75 is: 234,667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,678.14 : 434,637.19 = 156,401.75 : x
  2. Step 2: Convert to fraction form
    289,678.14/434,637.19 = 156,401.75/x
  3. Step 3: Cross multiply
    289,678.14x = 434,637.19 × 156,401.75
  4. Step 4: Simplify right side
    289,678.14x = 67,978,018,413.18
  5. Step 5: Solve for x
    x = 67,978,018,413.18/289,678.14
  6. Step 6: Final answer
    x = 234,667.41

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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.