Home / 219,225.71-302,582.04-128,610.79

Finding the Fourth Proportional to 219,225.71, 302,582.04 and 128,610.79

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Solution

The fourth proportional to 219,225.71, 302,582.04 and 128,610.79 is: 177,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,225.71 : 302,582.04 = 128,610.79 : x
  2. Step 2: Convert to fraction form
    219,225.71/302,582.04 = 128,610.79/x
  3. Step 3: Cross multiply
    219,225.71x = 302,582.04 × 128,610.79
  4. Step 4: Simplify right side
    219,225.71x = 38,915,315,204.21
  5. Step 5: Solve for x
    x = 38,915,315,204.21/219,225.71
  6. Step 6: Final answer
    x = 177,512.55

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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.