Home / 280,425.56-386,985.27-153,101.15

Finding the Fourth Proportional to 280,425.56, 386,985.27 and 153,101.15

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Solution

The fourth proportional to 280,425.56, 386,985.27 and 153,101.15 is: 211,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,425.56 : 386,985.27 = 153,101.15 : x
  2. Step 2: Convert to fraction form
    280,425.56/386,985.27 = 153,101.15/x
  3. Step 3: Cross multiply
    280,425.56x = 386,985.27 × 153,101.15
  4. Step 4: Simplify right side
    280,425.56x = 59,247,889,870.06
  5. Step 5: Solve for x
    x = 59,247,889,870.06/280,425.56
  6. Step 6: Final answer
    x = 211,278.50

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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.