Home / 280,686.26-387,352.86-153,370.28

Finding the Fourth Proportional to 280,686.26, 387,352.86 and 153,370.28

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Solution

The fourth proportional to 280,686.26, 387,352.86 and 153,370.28 is: 211,654.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,686.26 : 387,352.86 = 153,370.28 : x
  2. Step 2: Convert to fraction form
    280,686.26/387,352.86 = 153,370.28/x
  3. Step 3: Cross multiply
    280,686.26x = 387,352.86 × 153,370.28
  4. Step 4: Simplify right side
    280,686.26x = 59,408,416,597.00
  5. Step 5: Solve for x
    x = 59,408,416,597.00/280,686.26
  6. Step 6: Final answer
    x = 211,654.17

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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.