Home / 315,609.18-435,427.83-186,520.38

Finding the Fourth Proportional to 315,609.18, 435,427.83 and 186,520.38

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Solution

The fourth proportional to 315,609.18, 435,427.83 and 186,520.38 is: 257,331.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,609.18 : 435,427.83 = 186,520.38 : x
  2. Step 2: Convert to fraction form
    315,609.18/435,427.83 = 186,520.38/x
  3. Step 3: Cross multiply
    315,609.18x = 435,427.83 × 186,520.38
  4. Step 4: Simplify right side
    315,609.18x = 81,216,164,314.18
  5. Step 5: Solve for x
    x = 81,216,164,314.18/315,609.18
  6. Step 6: Final answer
    x = 257,331.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.