Home / 287,184.12-430,776.30-129,228.06

Finding the Fourth Proportional to 287,184.12, 430,776.30 and 129,228.06

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Solution

The fourth proportional to 287,184.12, 430,776.30 and 129,228.06 is: 193,842.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,184.12 : 430,776.30 = 129,228.06 : x
  2. Step 2: Convert to fraction form
    287,184.12/430,776.30 = 129,228.06/x
  3. Step 3: Cross multiply
    287,184.12x = 430,776.30 × 129,228.06
  4. Step 4: Simplify right side
    287,184.12x = 55,668,385,542.98
  5. Step 5: Solve for x
    x = 55,668,385,542.98/287,184.12
  6. Step 6: Final answer
    x = 193,842.14

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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.