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Finding the Fourth Proportional to 289,800.45, 399,886.47 and 160,737.39

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Solution

The fourth proportional to 289,800.45, 399,886.47 and 160,737.39 is: 221,796.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,800.45 : 399,886.47 = 160,737.39 : x
  2. Step 2: Convert to fraction form
    289,800.45/399,886.47 = 160,737.39/x
  3. Step 3: Cross multiply
    289,800.45x = 399,886.47 × 160,737.39
  4. Step 4: Simplify right side
    289,800.45x = 64,276,707,484.11
  5. Step 5: Solve for x
    x = 64,276,707,484.11/289,800.45
  6. Step 6: Final answer
    x = 221,796.44

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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.