Home / 289,189.36-434,450.04-205,158.16

Finding the Fourth Proportional to 289,189.36, 434,450.04 and 205,158.16

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Solution

The fourth proportional to 289,189.36, 434,450.04 and 205,158.16 is: 308,209.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,189.36 : 434,450.04 = 205,158.16 : x
  2. Step 2: Convert to fraction form
    289,189.36/434,450.04 = 205,158.16/x
  3. Step 3: Cross multiply
    289,189.36x = 434,450.04 × 205,158.16
  4. Step 4: Simplify right side
    289,189.36x = 89,130,970,818.33
  5. Step 5: Solve for x
    x = 89,130,970,818.33/289,189.36
  6. Step 6: Final answer
    x = 308,209.72

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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.