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Finding the Fourth Proportional to 485,781.82, 670,387.53 and 270,898.81

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Solution

The fourth proportional to 485,781.82, 670,387.53 and 270,898.81 is: 373,845.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,781.82 : 670,387.53 = 270,898.81 : x
  2. Step 2: Convert to fraction form
    485,781.82/670,387.53 = 270,898.81/x
  3. Step 3: Cross multiply
    485,781.82x = 670,387.53 × 270,898.81
  4. Step 4: Simplify right side
    485,781.82x = 181,607,184,115.84
  5. Step 5: Solve for x
    x = 181,607,184,115.84/485,781.82
  6. Step 6: Final answer
    x = 373,845.16

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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.