Home / 280,919.64-387,669.06-153,595.20

Finding the Fourth Proportional to 280,919.64, 387,669.06 and 153,595.20

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Solution

The fourth proportional to 280,919.64, 387,669.06 and 153,595.20 is: 211,961.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,919.64 : 387,669.06 = 153,595.20 : x
  2. Step 2: Convert to fraction form
    280,919.64/387,669.06 = 153,595.20/x
  3. Step 3: Cross multiply
    280,919.64x = 387,669.06 × 153,595.20
  4. Step 4: Simplify right side
    280,919.64x = 59,544,106,804.51
  5. Step 5: Solve for x
    x = 59,544,106,804.51/280,919.64
  6. Step 6: Final answer
    x = 211,961.35

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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.