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Finding the Fourth Proportional to 315,895.84, 473,773.89 and 91,207.51

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Solution

The fourth proportional to 315,895.84, 473,773.89 and 91,207.51 is: 136,791.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,895.84 : 473,773.89 = 91,207.51 : x
  2. Step 2: Convert to fraction form
    315,895.84/473,773.89 = 91,207.51/x
  3. Step 3: Cross multiply
    315,895.84x = 473,773.89 × 91,207.51
  4. Step 4: Simplify right side
    315,895.84x = 43,211,736,809.91
  5. Step 5: Solve for x
    x = 43,211,736,809.91/315,895.84
  6. Step 6: Final answer
    x = 136,791.09

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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.