Home / 209,084.82-288,538.16-128,564.94

Finding the Fourth Proportional to 209,084.82, 288,538.16 and 128,564.94

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Solution

The fourth proportional to 209,084.82, 288,538.16 and 128,564.94 is: 177,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,084.82 : 288,538.16 = 128,564.94 : x
  2. Step 2: Convert to fraction form
    209,084.82/288,538.16 = 128,564.94/x
  3. Step 3: Cross multiply
    209,084.82x = 288,538.16 × 128,564.94
  4. Step 4: Simplify right side
    209,084.82x = 37,095,891,228.11
  5. Step 5: Solve for x
    x = 37,095,891,228.11/209,084.82
  6. Step 6: Final answer
    x = 177,420.30

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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.