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Finding the Fourth Proportional to 287,672.04, 397,000.86 and 160,348.56

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Solution

The fourth proportional to 287,672.04, 397,000.86 and 160,348.56 is: 221,288.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,672.04 : 397,000.86 = 160,348.56 : x
  2. Step 2: Convert to fraction form
    287,672.04/397,000.86 = 160,348.56/x
  3. Step 3: Cross multiply
    287,672.04x = 397,000.86 × 160,348.56
  4. Step 4: Simplify right side
    287,672.04x = 63,658,516,219.76
  5. Step 5: Solve for x
    x = 63,658,516,219.76/287,672.04
  6. Step 6: Final answer
    x = 221,288.51

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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.