Home / 210,555.68-290,570.64-115,066.40

Finding the Fourth Proportional to 210,555.68, 290,570.64 and 115,066.40

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Solution

The fourth proportional to 210,555.68, 290,570.64 and 115,066.40 is: 158,793.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,555.68 : 290,570.64 = 115,066.40 : x
  2. Step 2: Convert to fraction form
    210,555.68/290,570.64 = 115,066.40/x
  3. Step 3: Cross multiply
    210,555.68x = 290,570.64 × 115,066.40
  4. Step 4: Simplify right side
    210,555.68x = 33,434,917,490.50
  5. Step 5: Solve for x
    x = 33,434,917,490.50/210,555.68
  6. Step 6: Final answer
    x = 158,793.71

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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.