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Finding the Fourth Proportional to 500,645.21, 750,967.80 and 121,563.38

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Solution

The fourth proportional to 500,645.21, 750,967.80 and 121,563.38 is: 182,345.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,645.21 : 750,967.80 = 121,563.38 : x
  2. Step 2: Convert to fraction form
    500,645.21/750,967.80 = 121,563.38/x
  3. Step 3: Cross multiply
    500,645.21x = 750,967.80 × 121,563.38
  4. Step 4: Simplify right side
    500,645.21x = 91,290,184,039.16
  5. Step 5: Solve for x
    x = 91,290,184,039.16/500,645.21
  6. Step 6: Final answer
    x = 182,345.07

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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.