Home / 218,982.96-302,271.72-128,368.08

Finding the Fourth Proportional to 218,982.96, 302,271.72 and 128,368.08

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Solution

The fourth proportional to 218,982.96, 302,271.72 and 128,368.08 is: 177,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,982.96 : 302,271.72 = 128,368.08 : x
  2. Step 2: Convert to fraction form
    218,982.96/302,271.72 = 128,368.08/x
  3. Step 3: Cross multiply
    218,982.96x = 302,271.72 × 128,368.08
  4. Step 4: Simplify right side
    218,982.96x = 38,802,040,334.70
  5. Step 5: Solve for x
    x = 38,802,040,334.70/218,982.96
  6. Step 6: Final answer
    x = 177,192.05

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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.