Home / 210,628.71-290,667.60-115,135.79

Finding the Fourth Proportional to 210,628.71, 290,667.60 and 115,135.79

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Solution

The fourth proportional to 210,628.71, 290,667.60 and 115,135.79 is: 158,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,628.71 : 290,667.60 = 115,135.79 : x
  2. Step 2: Convert to fraction form
    210,628.71/290,667.60 = 115,135.79/x
  3. Step 3: Cross multiply
    210,628.71x = 290,667.60 × 115,135.79
  4. Step 4: Simplify right side
    210,628.71x = 33,466,242,300.07
  5. Step 5: Solve for x
    x = 33,466,242,300.07/210,628.71
  6. Step 6: Final answer
    x = 158,887.37

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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.