Home / 280,623.90-420,935.85-242,570.10

Finding the Fourth Proportional to 280,623.90, 420,935.85 and 242,570.10

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Solution

The fourth proportional to 280,623.90, 420,935.85 and 242,570.10 is: 363,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,623.90 : 420,935.85 = 242,570.10 : x
  2. Step 2: Convert to fraction form
    280,623.90/420,935.85 = 242,570.10/x
  3. Step 3: Cross multiply
    280,623.90x = 420,935.85 × 242,570.10
  4. Step 4: Simplify right side
    280,623.90x = 102,106,451,228.09
  5. Step 5: Solve for x
    x = 102,106,451,228.09/280,623.90
  6. Step 6: Final answer
    x = 363,855.15

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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.