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Finding the Fourth Proportional to 258,065.55, 356,118.93 and 143,352.14

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Solution

The fourth proportional to 258,065.55, 356,118.93 and 143,352.14 is: 197,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,065.55 : 356,118.93 = 143,352.14 : x
  2. Step 2: Convert to fraction form
    258,065.55/356,118.93 = 143,352.14/x
  3. Step 3: Cross multiply
    258,065.55x = 356,118.93 × 143,352.14
  4. Step 4: Simplify right side
    258,065.55x = 51,050,408,929.42
  5. Step 5: Solve for x
    x = 51,050,408,929.42/258,065.55
  6. Step 6: Final answer
    x = 197,819.54

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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.