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Finding the Fourth Proportional to 287,874.32, 397,267.56 and 160,576.40

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Solution

The fourth proportional to 287,874.32, 397,267.56 and 160,576.40 is: 221,595.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,874.32 : 397,267.56 = 160,576.40 : x
  2. Step 2: Convert to fraction form
    287,874.32/397,267.56 = 160,576.40/x
  3. Step 3: Cross multiply
    287,874.32x = 397,267.56 × 160,576.40
  4. Step 4: Simplify right side
    287,874.32x = 63,791,794,621.58
  5. Step 5: Solve for x
    x = 63,791,794,621.58/287,874.32
  6. Step 6: Final answer
    x = 221,595.99

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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.