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Finding the Fourth Proportional to 258,532.75, 356,779.65 and 143,820.55

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Solution

The fourth proportional to 258,532.75, 356,779.65 and 143,820.55 is: 198,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,532.75 : 356,779.65 = 143,820.55 : x
  2. Step 2: Convert to fraction form
    258,532.75/356,779.65 = 143,820.55/x
  3. Step 3: Cross multiply
    258,532.75x = 356,779.65 × 143,820.55
  4. Step 4: Simplify right side
    258,532.75x = 51,312,245,491.81
  5. Step 5: Solve for x
    x = 51,312,245,491.81/258,532.75
  6. Step 6: Final answer
    x = 198,474.84

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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.