Home / 280,730.21-420,697.24-217,254.85

Finding the Fourth Proportional to 280,730.21, 420,697.24 and 217,254.85

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Solution

The fourth proportional to 280,730.21, 420,697.24 and 217,254.85 is: 325,574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,730.21 : 420,697.24 = 217,254.85 : x
  2. Step 2: Convert to fraction form
    280,730.21/420,697.24 = 217,254.85/x
  3. Step 3: Cross multiply
    280,730.21x = 420,697.24 × 217,254.85
  4. Step 4: Simplify right side
    280,730.21x = 91,398,514,807.19
  5. Step 5: Solve for x
    x = 91,398,514,807.19/280,730.21
  6. Step 6: Final answer
    x = 325,574.21

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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.