Home / 209,638.48-289,307.28-114,149.20

Finding the Fourth Proportional to 209,638.48, 289,307.28 and 114,149.20

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Solution

The fourth proportional to 209,638.48, 289,307.28 and 114,149.20 is: 157,529.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,638.48 : 289,307.28 = 114,149.20 : x
  2. Step 2: Convert to fraction form
    209,638.48/289,307.28 = 114,149.20/x
  3. Step 3: Cross multiply
    209,638.48x = 289,307.28 × 114,149.20
  4. Step 4: Simplify right side
    209,638.48x = 33,024,194,566.18
  5. Step 5: Solve for x
    x = 33,024,194,566.18/209,638.48
  6. Step 6: Final answer
    x = 157,529.26

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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.