Home / 219,278.32-302,609.06-128,699.62

Finding the Fourth Proportional to 219,278.32, 302,609.06 and 128,699.62

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Solution

The fourth proportional to 219,278.32, 302,609.06 and 128,699.62 is: 177,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,278.32 : 302,609.06 = 128,699.62 : x
  2. Step 2: Convert to fraction form
    219,278.32/302,609.06 = 128,699.62/x
  3. Step 3: Cross multiply
    219,278.32x = 302,609.06 × 128,699.62
  4. Step 4: Simplify right side
    219,278.32x = 38,945,671,030.56
  5. Step 5: Solve for x
    x = 38,945,671,030.56/219,278.32
  6. Step 6: Final answer
    x = 177,608.40

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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.