Home / 211,381.17-291,698.28-115,885.77

Finding the Fourth Proportional to 211,381.17, 291,698.28 and 115,885.77

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Solution

The fourth proportional to 211,381.17, 291,698.28 and 115,885.77 is: 159,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,381.17 : 291,698.28 = 115,885.77 : x
  2. Step 2: Convert to fraction form
    211,381.17/291,698.28 = 115,885.77/x
  3. Step 3: Cross multiply
    211,381.17x = 291,698.28 × 115,885.77
  4. Step 4: Simplify right side
    211,381.17x = 33,803,679,785.48
  5. Step 5: Solve for x
    x = 33,803,679,785.48/211,381.17
  6. Step 6: Final answer
    x = 159,918.12

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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.