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Finding the Fourth Proportional to 315,955.35, 473,918.45 and 79,292.79

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Solution

The fourth proportional to 315,955.35, 473,918.45 and 79,292.79 is: 118,935.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,955.35 : 473,918.45 = 79,292.79 : x
  2. Step 2: Convert to fraction form
    315,955.35/473,918.45 = 79,292.79/x
  3. Step 3: Cross multiply
    315,955.35x = 473,918.45 × 79,292.79
  4. Step 4: Simplify right side
    315,955.35x = 37,578,315,736.51
  5. Step 5: Solve for x
    x = 37,578,315,736.51/315,955.35
  6. Step 6: Final answer
    x = 118,935.53

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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.