Home / 219,479.04-302,913.18-128,884.58

Finding the Fourth Proportional to 219,479.04, 302,913.18 and 128,884.58

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Solution

The fourth proportional to 219,479.04, 302,913.18 and 128,884.58 is: 177,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,479.04 : 302,913.18 = 128,884.58 : x
  2. Step 2: Convert to fraction form
    219,479.04/302,913.18 = 128,884.58/x
  3. Step 3: Cross multiply
    219,479.04x = 302,913.18 × 128,884.58
  4. Step 4: Simplify right side
    219,479.04x = 39,040,837,980.76
  5. Step 5: Solve for x
    x = 39,040,837,980.76/219,479.04
  6. Step 6: Final answer
    x = 177,879.57

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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.