Home / 210,502.12-290,492.58-115,008.80

Finding the Fourth Proportional to 210,502.12, 290,492.58 and 115,008.80

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Solution

The fourth proportional to 210,502.12, 290,492.58 and 115,008.80 is: 158,711.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,502.12 : 290,492.58 = 115,008.80 : x
  2. Step 2: Convert to fraction form
    210,502.12/290,492.58 = 115,008.80/x
  3. Step 3: Cross multiply
    210,502.12x = 290,492.58 × 115,008.80
  4. Step 4: Simplify right side
    210,502.12x = 33,409,203,034.70
  5. Step 5: Solve for x
    x = 33,409,203,034.70/210,502.12
  6. Step 6: Final answer
    x = 158,711.96

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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.