Home / 280,427.94-386,988.55-153,103.53

Finding the Fourth Proportional to 280,427.94, 386,988.55 and 153,103.53

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Solution

The fourth proportional to 280,427.94, 386,988.55 and 153,103.53 is: 211,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,427.94 : 386,988.55 = 153,103.53 : x
  2. Step 2: Convert to fraction form
    280,427.94/386,988.55 = 153,103.53/x
  3. Step 3: Cross multiply
    280,427.94x = 386,988.55 × 153,103.53
  4. Step 4: Simplify right side
    280,427.94x = 59,249,310,756.88
  5. Step 5: Solve for x
    x = 59,249,310,756.88/280,427.94
  6. Step 6: Final answer
    x = 211,281.77

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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.