Home / 280,309.80-386,822.14-152,986.32

Finding the Fourth Proportional to 280,309.80, 386,822.14 and 152,986.32

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Solution

The fourth proportional to 280,309.80, 386,822.14 and 152,986.32 is: 211,118.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,309.80 : 386,822.14 = 152,986.32 : x
  2. Step 2: Convert to fraction form
    280,309.80/386,822.14 = 152,986.32/x
  3. Step 3: Cross multiply
    280,309.80x = 386,822.14 × 152,986.32
  4. Step 4: Simplify right side
    280,309.80x = 59,178,495,693.12
  5. Step 5: Solve for x
    x = 59,178,495,693.12/280,309.80
  6. Step 6: Final answer
    x = 211,118.18

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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.