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Finding the Fourth Proportional to 418,943.79, 578,065.93 and 273,710.93

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Solution

The fourth proportional to 418,943.79, 578,065.93 and 273,710.93 is: 377,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,943.79 : 578,065.93 = 273,710.93 : x
  2. Step 2: Convert to fraction form
    418,943.79/578,065.93 = 273,710.93/x
  3. Step 3: Cross multiply
    418,943.79x = 578,065.93 × 273,710.93
  4. Step 4: Simplify right side
    418,943.79x = 158,222,959,727.01
  5. Step 5: Solve for x
    x = 158,222,959,727.01/418,943.79
  6. Step 6: Final answer
    x = 377,671.09

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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.