Home / 280,559.35-420,840.65-93,570.31

Finding the Fourth Proportional to 280,559.35, 420,840.65 and 93,570.31

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Solution

The fourth proportional to 280,559.35, 420,840.65 and 93,570.31 is: 140,356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,559.35 : 420,840.65 = 93,570.31 : x
  2. Step 2: Convert to fraction form
    280,559.35/420,840.65 = 93,570.31/x
  3. Step 3: Cross multiply
    280,559.35x = 420,840.65 × 93,570.31
  4. Step 4: Simplify right side
    280,559.35x = 39,378,190,081.10
  5. Step 5: Solve for x
    x = 39,378,190,081.10/280,559.35
  6. Step 6: Final answer
    x = 140,356.01

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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.