Home / 280,637.81-387,165.49-207,226.15

Finding the Fourth Proportional to 280,637.81, 387,165.49 and 207,226.15

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Solution

The fourth proportional to 280,637.81, 387,165.49 and 207,226.15 is: 285,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,637.81 : 387,165.49 = 207,226.15 : x
  2. Step 2: Convert to fraction form
    280,637.81/387,165.49 = 207,226.15/x
  3. Step 3: Cross multiply
    280,637.81x = 387,165.49 × 207,226.15
  4. Step 4: Simplify right side
    280,637.81x = 80,230,813,905.56
  5. Step 5: Solve for x
    x = 80,230,813,905.56/280,637.81
  6. Step 6: Final answer
    x = 285,887.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.