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Finding the Fourth Proportional to 540,393.55, 745,781.72 and 298,670.90

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Solution

The fourth proportional to 540,393.55, 745,781.72 and 298,670.90 is: 412,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,393.55 : 745,781.72 = 298,670.90 : x
  2. Step 2: Convert to fraction form
    540,393.55/745,781.72 = 298,670.90/x
  3. Step 3: Cross multiply
    540,393.55x = 745,781.72 × 298,670.90
  4. Step 4: Simplify right side
    540,393.55x = 222,743,292,293.69
  5. Step 5: Solve for x
    x = 222,743,292,293.69/540,393.55
  6. Step 6: Final answer
    x = 412,187.18

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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.