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Finding the Fourth Proportional to 356,357.06, 534,619.39 and 103,643.13

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Solution

The fourth proportional to 356,357.06, 534,619.39 and 103,643.13 is: 155,489.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,357.06 : 534,619.39 = 103,643.13 : x
  2. Step 2: Convert to fraction form
    356,357.06/534,619.39 = 103,643.13/x
  3. Step 3: Cross multiply
    356,357.06x = 534,619.39 × 103,643.13
  4. Step 4: Simplify right side
    356,357.06x = 55,409,626,938.29
  5. Step 5: Solve for x
    x = 55,409,626,938.29/356,357.06
  6. Step 6: Final answer
    x = 155,489.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.