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Finding the Fourth Proportional to 439,917, 607,078.98 and 258,649.32

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Solution

The fourth proportional to 439,917, 607,078.98 and 258,649.32 is: 356,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,917 : 607,078.98 = 258,649.32 : x
  2. Step 2: Convert to fraction form
    439,917/607,078.98 = 258,649.32/x
  3. Step 3: Cross multiply
    439,917x = 607,078.98 × 258,649.32
  4. Step 4: Simplify right side
    439,917x = 157,020,565,363.29
  5. Step 5: Solve for x
    x = 157,020,565,363.29/439,917
  6. Step 6: Final answer
    x = 356,932.25

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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.