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Finding the Fourth Proportional to 500,368.30, 750,553.98 and 121,287.54

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Solution

The fourth proportional to 500,368.30, 750,553.98 and 121,287.54 is: 181,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,368.30 : 750,553.98 = 121,287.54 : x
  2. Step 2: Convert to fraction form
    500,368.30/750,553.98 = 121,287.54/x
  3. Step 3: Cross multiply
    500,368.30x = 750,553.98 × 121,287.54
  4. Step 4: Simplify right side
    500,368.30x = 91,032,845,871.41
  5. Step 5: Solve for x
    x = 91,032,845,871.41/500,368.30
  6. Step 6: Final answer
    x = 181,931.68

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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.