Home / 280,474.32-387,054.54-153,150.02

Finding the Fourth Proportional to 280,474.32, 387,054.54 and 153,150.02

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Solution

The fourth proportional to 280,474.32, 387,054.54 and 153,150.02 is: 211,347.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,474.32 : 387,054.54 = 153,150.02 : x
  2. Step 2: Convert to fraction form
    280,474.32/387,054.54 = 153,150.02/x
  3. Step 3: Cross multiply
    280,474.32x = 387,054.54 × 153,150.02
  4. Step 4: Simplify right side
    280,474.32x = 59,277,408,606.82
  5. Step 5: Solve for x
    x = 59,277,408,606.82/280,474.32
  6. Step 6: Final answer
    x = 211,347.01

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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.