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Finding the Fourth Proportional to 258,168.58, 356,271.45 and 143,465.89

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Solution

The fourth proportional to 258,168.58, 356,271.45 and 143,465.89 is: 197,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,168.58 : 356,271.45 = 143,465.89 : x
  2. Step 2: Convert to fraction form
    258,168.58/356,271.45 = 143,465.89/x
  3. Step 3: Cross multiply
    258,168.58x = 356,271.45 × 143,465.89
  4. Step 4: Simplify right side
    258,168.58x = 51,112,800,655.84
  5. Step 5: Solve for x
    x = 51,112,800,655.84/258,168.58
  6. Step 6: Final answer
    x = 197,982.27

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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.