Home / 219,475.04-302,907.67-128,880.59

Finding the Fourth Proportional to 219,475.04, 302,907.67 and 128,880.59

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Solution

The fourth proportional to 219,475.04, 302,907.67 and 128,880.59 is: 177,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,475.04 : 302,907.67 = 128,880.59 : x
  2. Step 2: Convert to fraction form
    219,475.04/302,907.67 = 128,880.59/x
  3. Step 3: Cross multiply
    219,475.04x = 302,907.67 × 128,880.59
  4. Step 4: Simplify right side
    219,475.04x = 39,038,917,388.39
  5. Step 5: Solve for x
    x = 39,038,917,388.39/219,475.04
  6. Step 6: Final answer
    x = 177,874.07

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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.