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Finding the Fourth Proportional to 387,347.97, 581,055.44 and 106,865.22

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Solution

The fourth proportional to 387,347.97, 581,055.44 and 106,865.22 is: 160,307.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,347.97 : 581,055.44 = 106,865.22 : x
  2. Step 2: Convert to fraction form
    387,347.97/581,055.44 = 106,865.22/x
  3. Step 3: Cross multiply
    387,347.97x = 581,055.44 × 106,865.22
  4. Step 4: Simplify right side
    387,347.97x = 62,094,616,893.47
  5. Step 5: Solve for x
    x = 62,094,616,893.47/387,347.97
  6. Step 6: Final answer
    x = 160,307.07

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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.