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Finding the Fourth Proportional to 539,970.48, 745,155.72 and 298,268.64

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Solution

The fourth proportional to 539,970.48, 745,155.72 and 298,268.64 is: 411,608.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,970.48 : 745,155.72 = 298,268.64 : x
  2. Step 2: Convert to fraction form
    539,970.48/745,155.72 = 298,268.64/x
  3. Step 3: Cross multiply
    539,970.48x = 745,155.72 × 298,268.64
  4. Step 4: Simplify right side
    539,970.48x = 222,256,583,192.62
  5. Step 5: Solve for x
    x = 222,256,583,192.62/539,970.48
  6. Step 6: Final answer
    x = 411,608.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.