Home / 387,948.40-581,923.30-121,729.36

Finding the Fourth Proportional to 387,948.40, 581,923.30 and 121,729.36

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Solution

The fourth proportional to 387,948.40, 581,923.30 and 121,729.36 is: 182,594.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,948.40 : 581,923.30 = 121,729.36 : x
  2. Step 2: Convert to fraction form
    387,948.40/581,923.30 = 121,729.36/x
  3. Step 3: Cross multiply
    387,948.40x = 581,923.30 × 121,729.36
  4. Step 4: Simplify right side
    387,948.40x = 70,837,150,878.09
  5. Step 5: Solve for x
    x = 70,837,150,878.09/387,948.40
  6. Step 6: Final answer
    x = 182,594.26

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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.