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Finding the Fourth Proportional to 287,745.02, 397,338.86 and 180,499.40

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Solution

The fourth proportional to 287,745.02, 397,338.86 and 180,499.40 is: 249,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,745.02 : 397,338.86 = 180,499.40 : x
  2. Step 2: Convert to fraction form
    287,745.02/397,338.86 = 180,499.40/x
  3. Step 3: Cross multiply
    287,745.02x = 397,338.86 × 180,499.40
  4. Step 4: Simplify right side
    287,745.02x = 71,719,425,826.68
  5. Step 5: Solve for x
    x = 71,719,425,826.68/287,745.02
  6. Step 6: Final answer
    x = 249,246.45

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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.