Home / 280,558.69-387,173.04-153,234.28

Finding the Fourth Proportional to 280,558.69, 387,173.04 and 153,234.28

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Solution

The fourth proportional to 280,558.69, 387,173.04 and 153,234.28 is: 211,464.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,558.69 : 387,173.04 = 153,234.28 : x
  2. Step 2: Convert to fraction form
    280,558.69/387,173.04 = 153,234.28/x
  3. Step 3: Cross multiply
    280,558.69x = 387,173.04 × 153,234.28
  4. Step 4: Simplify right side
    280,558.69x = 59,328,182,360.12
  5. Step 5: Solve for x
    x = 59,328,182,360.12/280,558.69
  6. Step 6: Final answer
    x = 211,464.43

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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.