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Finding the Fourth Proportional to 235,578.18, 325,118.96 and 138,782.93

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Solution

The fourth proportional to 235,578.18, 325,118.96 and 138,782.93 is: 191,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,578.18 : 325,118.96 = 138,782.93 : x
  2. Step 2: Convert to fraction form
    235,578.18/325,118.96 = 138,782.93/x
  3. Step 3: Cross multiply
    235,578.18x = 325,118.96 × 138,782.93
  4. Step 4: Simplify right side
    235,578.18x = 45,120,959,547.84
  5. Step 5: Solve for x
    x = 45,120,959,547.84/235,578.18
  6. Step 6: Final answer
    x = 191,532.85

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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.