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Finding the Fourth Proportional to 258,495.93, 356,730.53 and 143,779.23

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Solution

The fourth proportional to 258,495.93, 356,730.53 and 143,779.23 is: 198,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,495.93 : 356,730.53 = 143,779.23 : x
  2. Step 2: Convert to fraction form
    258,495.93/356,730.53 = 143,779.23/x
  3. Step 3: Cross multiply
    258,495.93x = 356,730.53 × 143,779.23
  4. Step 4: Simplify right side
    258,495.93x = 51,290,440,202.00
  5. Step 5: Solve for x
    x = 51,290,440,202.00/258,495.93
  6. Step 6: Final answer
    x = 198,418.75

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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.