Home / 289,278.18-434,197.53-139,623.66

Finding the Fourth Proportional to 289,278.18, 434,197.53 and 139,623.66

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Solution

The fourth proportional to 289,278.18, 434,197.53 and 139,623.66 is: 209,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,278.18 : 434,197.53 = 139,623.66 : x
  2. Step 2: Convert to fraction form
    289,278.18/434,197.53 = 139,623.66/x
  3. Step 3: Cross multiply
    289,278.18x = 434,197.53 × 139,623.66
  4. Step 4: Simplify right side
    289,278.18x = 60,624,248,301.56
  5. Step 5: Solve for x
    x = 60,624,248,301.56/289,278.18
  6. Step 6: Final answer
    x = 209,570.76

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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.