Home / 287,745.32-397,084.20-160,417.64

Finding the Fourth Proportional to 287,745.32, 397,084.20 and 160,417.64

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Solution

The fourth proportional to 287,745.32, 397,084.20 and 160,417.64 is: 221,373.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,745.32 : 397,084.20 = 160,417.64 : x
  2. Step 2: Convert to fraction form
    287,745.32/397,084.20 = 160,417.64/x
  3. Step 3: Cross multiply
    287,745.32x = 397,084.20 × 160,417.64
  4. Step 4: Simplify right side
    287,745.32x = 63,699,310,245.29
  5. Step 5: Solve for x
    x = 63,699,310,245.29/287,745.32
  6. Step 6: Final answer
    x = 221,373.92

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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.