Home / 209,715.90-289,416.10-119,080.28

Finding the Fourth Proportional to 209,715.90, 289,416.10 and 119,080.28

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Solution

The fourth proportional to 209,715.90, 289,416.10 and 119,080.28 is: 164,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,715.90 : 289,416.10 = 119,080.28 : x
  2. Step 2: Convert to fraction form
    209,715.90/289,416.10 = 119,080.28/x
  3. Step 3: Cross multiply
    209,715.90x = 289,416.10 × 119,080.28
  4. Step 4: Simplify right side
    209,715.90x = 34,463,750,224.51
  5. Step 5: Solve for x
    x = 34,463,750,224.51/209,715.90
  6. Step 6: Final answer
    x = 164,335.42

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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.