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Finding the Fourth Proportional to 500,788.78, 751,210.53 and 126,815.02

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Solution

The fourth proportional to 500,788.78, 751,210.53 and 126,815.02 is: 190,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,788.78 : 751,210.53 = 126,815.02 : x
  2. Step 2: Convert to fraction form
    500,788.78/751,210.53 = 126,815.02/x
  3. Step 3: Cross multiply
    500,788.78x = 751,210.53 × 126,815.02
  4. Step 4: Simplify right side
    500,788.78x = 95,264,778,386.16
  5. Step 5: Solve for x
    x = 95,264,778,386.16/500,788.78
  6. Step 6: Final answer
    x = 190,229.46

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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.