Home / 280,686.59-387,342.97-153,359.45

Finding the Fourth Proportional to 280,686.59, 387,342.97 and 153,359.45

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Solution

The fourth proportional to 280,686.59, 387,342.97 and 153,359.45 is: 211,633.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,686.59 : 387,342.97 = 153,359.45 : x
  2. Step 2: Convert to fraction form
    280,686.59/387,342.97 = 153,359.45/x
  3. Step 3: Cross multiply
    280,686.59x = 387,342.97 × 153,359.45
  4. Step 4: Simplify right side
    280,686.59x = 59,402,702,520.45
  5. Step 5: Solve for x
    x = 59,402,702,520.45/280,686.59
  6. Step 6: Final answer
    x = 211,633.56

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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.