Home / 211,160.31-291,401.28-115,670.40

Finding the Fourth Proportional to 211,160.31, 291,401.28 and 115,670.40

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Solution

The fourth proportional to 211,160.31, 291,401.28 and 115,670.40 is: 159,625.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,160.31 : 291,401.28 = 115,670.40 : x
  2. Step 2: Convert to fraction form
    211,160.31/291,401.28 = 115,670.40/x
  3. Step 3: Cross multiply
    211,160.31x = 291,401.28 × 115,670.40
  4. Step 4: Simplify right side
    211,160.31x = 33,706,502,618.11
  5. Step 5: Solve for x
    x = 33,706,502,618.11/211,160.31
  6. Step 6: Final answer
    x = 159,625.18

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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.