Home / 280,427.06-386,987.34-153,102.66

Finding the Fourth Proportional to 280,427.06, 386,987.34 and 153,102.66

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Solution

The fourth proportional to 280,427.06, 386,987.34 and 153,102.66 is: 211,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,427.06 : 386,987.34 = 153,102.66 : x
  2. Step 2: Convert to fraction form
    280,427.06/386,987.34 = 153,102.66/x
  3. Step 3: Cross multiply
    280,427.06x = 386,987.34 × 153,102.66
  4. Step 4: Simplify right side
    280,427.06x = 59,248,791,140.32
  5. Step 5: Solve for x
    x = 59,248,791,140.32/280,427.06
  6. Step 6: Final answer
    x = 211,280.58

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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.