Home / 403,139.22-556,146-259,945.26

Finding the Fourth Proportional to 403,139.22, 556,146 and 259,945.26

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Solution

The fourth proportional to 403,139.22, 556,146 and 259,945.26 is: 358,604.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,139.22 : 556,146 = 259,945.26 : x
  2. Step 2: Convert to fraction form
    403,139.22/556,146 = 259,945.26/x
  3. Step 3: Cross multiply
    403,139.22x = 556,146 × 259,945.26
  4. Step 4: Simplify right side
    403,139.22x = 144,567,516,567.96
  5. Step 5: Solve for x
    x = 144,567,516,567.96/403,139.22
  6. Step 6: Final answer
    x = 358,604.45

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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.