Home / 258,643.03-356,923.87-145,465.78

Finding the Fourth Proportional to 258,643.03, 356,923.87 and 145,465.78

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Solution

The fourth proportional to 258,643.03, 356,923.87 and 145,465.78 is: 200,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,643.03 : 356,923.87 = 145,465.78 : x
  2. Step 2: Convert to fraction form
    258,643.03/356,923.87 = 145,465.78/x
  3. Step 3: Cross multiply
    258,643.03x = 356,923.87 × 145,465.78
  4. Step 4: Simplify right side
    258,643.03x = 51,920,209,150.17
  5. Step 5: Solve for x
    x = 51,920,209,150.17/258,643.03
  6. Step 6: Final answer
    x = 200,740.80

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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.