Home / 289,665.09-399,761.37-160,616.40

Finding the Fourth Proportional to 289,665.09, 399,761.37 and 160,616.40

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Solution

The fourth proportional to 289,665.09, 399,761.37 and 160,616.40 is: 221,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,665.09 : 399,761.37 = 160,616.40 : x
  2. Step 2: Convert to fraction form
    289,665.09/399,761.37 = 160,616.40/x
  3. Step 3: Cross multiply
    289,665.09x = 399,761.37 × 160,616.40
  4. Step 4: Simplify right side
    289,665.09x = 64,208,232,108.47
  5. Step 5: Solve for x
    x = 64,208,232,108.47/289,665.09
  6. Step 6: Final answer
    x = 221,663.69

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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.