Home / 210,845.40-290,969.93-115,353.69

Finding the Fourth Proportional to 210,845.40, 290,969.93 and 115,353.69

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Solution

The fourth proportional to 210,845.40, 290,969.93 and 115,353.69 is: 159,189.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,845.40 : 290,969.93 = 115,353.69 : x
  2. Step 2: Convert to fraction form
    210,845.40/290,969.93 = 115,353.69/x
  3. Step 3: Cross multiply
    210,845.40x = 290,969.93 × 115,353.69
  4. Step 4: Simplify right side
    210,845.40x = 33,564,455,392.93
  5. Step 5: Solve for x
    x = 33,564,455,392.93/210,845.40
  6. Step 6: Final answer
    x = 159,189.89

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1.5x scale

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.