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Finding the Fourth Proportional to 383,790.80, 575,680.80 and 173,428.40

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Solution

The fourth proportional to 383,790.80, 575,680.80 and 173,428.40 is: 260,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,790.80 : 575,680.80 = 173,428.40 : x
  2. Step 2: Convert to fraction form
    383,790.80/575,680.80 = 173,428.40/x
  3. Step 3: Cross multiply
    383,790.80x = 575,680.80 × 173,428.40
  4. Step 4: Simplify right side
    383,790.80x = 99,839,400,054.72
  5. Step 5: Solve for x
    x = 99,839,400,054.72/383,790.80
  6. Step 6: Final answer
    x = 260,140.16

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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.