Home / 287,137.12-396,263.28-173,970.40

Finding the Fourth Proportional to 287,137.12, 396,263.28 and 173,970.40

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Solution

The fourth proportional to 287,137.12, 396,263.28 and 173,970.40 is: 240,087.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,137.12 : 396,263.28 = 173,970.40 : x
  2. Step 2: Convert to fraction form
    287,137.12/396,263.28 = 173,970.40/x
  3. Step 3: Cross multiply
    287,137.12x = 396,263.28 × 173,970.40
  4. Step 4: Simplify right side
    287,137.12x = 68,938,081,326.91
  5. Step 5: Solve for x
    x = 68,938,081,326.91/287,137.12
  6. Step 6: Final answer
    x = 240,087.67

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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.