Home / 217,577.80-326,142.16-91,291.40

Finding the Fourth Proportional to 217,577.80, 326,142.16 and 91,291.40

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Solution

The fourth proportional to 217,577.80, 326,142.16 and 91,291.40 is: 136,842.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,577.80 : 326,142.16 = 91,291.40 : x
  2. Step 2: Convert to fraction form
    217,577.80/326,142.16 = 91,291.40/x
  3. Step 3: Cross multiply
    217,577.80x = 326,142.16 × 91,291.40
  4. Step 4: Simplify right side
    217,577.80x = 29,773,974,385.42
  5. Step 5: Solve for x
    x = 29,773,974,385.42/217,577.80
  6. Step 6: Final answer
    x = 136,842.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.