Home / 211,017.72-291,208.08-130,443.18

Finding the Fourth Proportional to 211,017.72, 291,208.08 and 130,443.18

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Solution

The fourth proportional to 211,017.72, 291,208.08 and 130,443.18 is: 180,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,017.72 : 291,208.08 = 130,443.18 : x
  2. Step 2: Convert to fraction form
    211,017.72/291,208.08 = 130,443.18/x
  3. Step 3: Cross multiply
    211,017.72x = 291,208.08 × 130,443.18
  4. Step 4: Simplify right side
    211,017.72x = 37,986,107,996.89
  5. Step 5: Solve for x
    x = 37,986,107,996.89/211,017.72
  6. Step 6: Final answer
    x = 180,013.83

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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.