Home / 219,021.94-302,314.90-128,397.52

Finding the Fourth Proportional to 219,021.94, 302,314.90 and 128,397.52

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Solution

The fourth proportional to 219,021.94, 302,314.90 and 128,397.52 is: 177,226.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,021.94 : 302,314.90 = 128,397.52 : x
  2. Step 2: Convert to fraction form
    219,021.94/302,314.90 = 128,397.52/x
  3. Step 3: Cross multiply
    219,021.94x = 302,314.90 × 128,397.52
  4. Step 4: Simplify right side
    219,021.94x = 38,816,483,419.05
  5. Step 5: Solve for x
    x = 38,816,483,419.05/219,021.94
  6. Step 6: Final answer
    x = 177,226.46

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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.