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Finding the Fourth Proportional to 500,368.49, 750,554.30 and 121,287.78

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Solution

The fourth proportional to 500,368.49, 750,554.30 and 121,287.78 is: 181,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,368.49 : 750,554.30 = 121,287.78 : x
  2. Step 2: Convert to fraction form
    500,368.49/750,554.30 = 121,287.78/x
  3. Step 3: Cross multiply
    500,368.49x = 750,554.30 × 121,287.78
  4. Step 4: Simplify right side
    500,368.49x = 91,033,065,119.67
  5. Step 5: Solve for x
    x = 91,033,065,119.67/500,368.49
  6. Step 6: Final answer
    x = 181,932.05

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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.