Home / 219,290.56-302,623.45-128,648.07

Finding the Fourth Proportional to 219,290.56, 302,623.45 and 128,648.07

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Solution

The fourth proportional to 219,290.56, 302,623.45 and 128,648.07 is: 177,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,290.56 : 302,623.45 = 128,648.07 : x
  2. Step 2: Convert to fraction form
    219,290.56/302,623.45 = 128,648.07/x
  3. Step 3: Cross multiply
    219,290.56x = 302,623.45 × 128,648.07
  4. Step 4: Simplify right side
    219,290.56x = 38,931,922,779.24
  5. Step 5: Solve for x
    x = 38,931,922,779.24/219,290.56
  6. Step 6: Final answer
    x = 177,535.79

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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.