Home / 211,168.26-291,412.28-115,678.40

Finding the Fourth Proportional to 211,168.26, 291,412.28 and 115,678.40

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Solution

The fourth proportional to 211,168.26, 291,412.28 and 115,678.40 is: 159,636.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,168.26 : 291,412.28 = 115,678.40 : x
  2. Step 2: Convert to fraction form
    211,168.26/291,412.28 = 115,678.40/x
  3. Step 3: Cross multiply
    211,168.26x = 291,412.28 × 115,678.40
  4. Step 4: Simplify right side
    211,168.26x = 33,710,106,290.75
  5. Step 5: Solve for x
    x = 33,710,106,290.75/211,168.26
  6. Step 6: Final answer
    x = 159,636.24

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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.