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Finding the Fourth Proportional to 403,879.08, 556,897.86 and 258,494.52

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Solution

The fourth proportional to 403,879.08, 556,897.86 and 258,494.52 is: 356,431.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,879.08 : 556,897.86 = 258,494.52 : x
  2. Step 2: Convert to fraction form
    403,879.08/556,897.86 = 258,494.52/x
  3. Step 3: Cross multiply
    403,879.08x = 556,897.86 × 258,494.52
  4. Step 4: Simplify right side
    403,879.08x = 143,955,045,009.73
  5. Step 5: Solve for x
    x = 143,955,045,009.73/403,879.08
  6. Step 6: Final answer
    x = 356,431.05

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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.