Home / 213,234.75-294,263.96-128,368.22

Finding the Fourth Proportional to 213,234.75, 294,263.96 and 128,368.22

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Solution

The fourth proportional to 213,234.75, 294,263.96 and 128,368.22 is: 177,148.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,234.75 : 294,263.96 = 128,368.22 : x
  2. Step 2: Convert to fraction form
    213,234.75/294,263.96 = 128,368.22/x
  3. Step 3: Cross multiply
    213,234.75x = 294,263.96 × 128,368.22
  4. Step 4: Simplify right side
    213,234.75x = 37,774,138,642.19
  5. Step 5: Solve for x
    x = 37,774,138,642.19/213,234.75
  6. Step 6: Final answer
    x = 177,148.14

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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.