Home / 280,621.26-387,263.03-153,305.06

Finding the Fourth Proportional to 280,621.26, 387,263.03 and 153,305.06

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Solution

The fourth proportional to 280,621.26, 387,263.03 and 153,305.06 is: 211,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,621.26 : 387,263.03 = 153,305.06 : x
  2. Step 2: Convert to fraction form
    280,621.26/387,263.03 = 153,305.06/x
  3. Step 3: Cross multiply
    280,621.26x = 387,263.03 × 153,305.06
  4. Step 4: Simplify right side
    280,621.26x = 59,369,379,347.09
  5. Step 5: Solve for x
    x = 59,369,379,347.09/280,621.26
  6. Step 6: Final answer
    x = 211,564.08

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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.