Home / 280,762.08-387,341.76-173,145.30

Finding the Fourth Proportional to 280,762.08, 387,341.76 and 173,145.30

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Solution

The fourth proportional to 280,762.08, 387,341.76 and 173,145.30 is: 238,872.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,762.08 : 387,341.76 = 173,145.30 : x
  2. Step 2: Convert to fraction form
    280,762.08/387,341.76 = 173,145.30/x
  3. Step 3: Cross multiply
    280,762.08x = 387,341.76 × 173,145.30
  4. Step 4: Simplify right side
    280,762.08x = 67,066,405,237.73
  5. Step 5: Solve for x
    x = 67,066,405,237.73/280,762.08
  6. Step 6: Final answer
    x = 238,872.73

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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.