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Finding the Fourth Proportional to 258,509.53, 356,699.55 and 143,773.12

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Solution

The fourth proportional to 258,509.53, 356,699.55 and 143,773.12 is: 198,382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,509.53 : 356,699.55 = 143,773.12 : x
  2. Step 2: Convert to fraction form
    258,509.53/356,699.55 = 143,773.12/x
  3. Step 3: Cross multiply
    258,509.53x = 356,699.55 × 143,773.12
  4. Step 4: Simplify right side
    258,509.53x = 51,283,807,206.10
  5. Step 5: Solve for x
    x = 51,283,807,206.10/258,509.53
  6. Step 6: Final answer
    x = 198,382.66

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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.