Home / 280,674.21-387,325.89-153,347.07

Finding the Fourth Proportional to 280,674.21, 387,325.89 and 153,347.07

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Solution

The fourth proportional to 280,674.21, 387,325.89 and 153,347.07 is: 211,616.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,674.21 : 387,325.89 = 153,347.07 : x
  2. Step 2: Convert to fraction form
    280,674.21/387,325.89 = 153,347.07/x
  3. Step 3: Cross multiply
    280,674.21x = 387,325.89 × 153,347.07
  4. Step 4: Simplify right side
    280,674.21x = 59,395,290,366.64
  5. Step 5: Solve for x
    x = 59,395,290,366.64/280,674.21
  6. Step 6: Final answer
    x = 211,616.49

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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.