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Finding the Fourth Proportional to 289,140, 399,259.44 and 181,889.52

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Solution

The fourth proportional to 289,140, 399,259.44 and 181,889.52 is: 251,162.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,140 : 399,259.44 = 181,889.52 : x
  2. Step 2: Convert to fraction form
    289,140/399,259.44 = 181,889.52/x
  3. Step 3: Cross multiply
    289,140x = 399,259.44 × 181,889.52
  4. Step 4: Simplify right side
    289,140x = 72,621,107,897.07
  5. Step 5: Solve for x
    x = 72,621,107,897.07/289,140
  6. Step 6: Final answer
    x = 251,162.44

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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.