Home / 257,316.85-355,093.36-144,143.65

Finding the Fourth Proportional to 257,316.85, 355,093.36 and 144,143.65

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Solution

The fourth proportional to 257,316.85, 355,093.36 and 144,143.65 is: 198,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,316.85 : 355,093.36 = 144,143.65 : x
  2. Step 2: Convert to fraction form
    257,316.85/355,093.36 = 144,143.65/x
  3. Step 3: Cross multiply
    257,316.85x = 355,093.36 × 144,143.65
  4. Step 4: Simplify right side
    257,316.85x = 51,184,453,001.16
  5. Step 5: Solve for x
    x = 51,184,453,001.16/257,316.85
  6. Step 6: Final answer
    x = 198,916.06

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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.