Home / 401,883.12-554,503.32-258,689.52

Finding the Fourth Proportional to 401,883.12, 554,503.32 and 258,689.52

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Solution

The fourth proportional to 401,883.12, 554,503.32 and 258,689.52 is: 356,930.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,883.12 : 554,503.32 = 258,689.52 : x
  2. Step 2: Convert to fraction form
    401,883.12/554,503.32 = 258,689.52/x
  3. Step 3: Cross multiply
    401,883.12x = 554,503.32 × 258,689.52
  4. Step 4: Simplify right side
    401,883.12x = 143,444,197,689.21
  5. Step 5: Solve for x
    x = 143,444,197,689.21/401,883.12
  6. Step 6: Final answer
    x = 356,930.14

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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.