Home / 280,259.03-420,554.55-262,526.87

Finding the Fourth Proportional to 280,259.03, 420,554.55 and 262,526.87

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Solution

The fourth proportional to 280,259.03, 420,554.55 and 262,526.87 is: 393,945.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,259.03 : 420,554.55 = 262,526.87 : x
  2. Step 2: Convert to fraction form
    280,259.03/420,554.55 = 262,526.87/x
  3. Step 3: Cross multiply
    280,259.03x = 420,554.55 × 262,526.87
  4. Step 4: Simplify right side
    280,259.03x = 110,406,869,675.76
  5. Step 5: Solve for x
    x = 110,406,869,675.76/280,259.03
  6. Step 6: Final answer
    x = 393,945.81

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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.