Home / 280,173,206.40-420,259,809.60-98,420,384.40

Finding the Fourth Proportional to 280,173,206.40, 420,259,809.60 and 98,420,384.40

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Solution

The fourth proportional to 280,173,206.40, 420,259,809.60 and 98,420,384.40 is: 147,630,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,173,206.40 : 420,259,809.60 = 98,420,384.40 : x
  2. Step 2: Convert to fraction form
    280,173,206.40/420,259,809.60 = 98,420,384.40/x
  3. Step 3: Cross multiply
    280,173,206.40x = 420,259,809.60 × 98,420,384.40
  4. Step 4: Simplify right side
    280,173,206.40x = 41,362,132,008,702,816
  5. Step 5: Solve for x
    x = 41,362,132,008,702,816/280,173,206.40
  6. Step 6: Final answer
    x = 147,630,576.60

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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.