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Finding the Fourth Proportional to 210,530.80, 290,529.02 and 115,035.44

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Solution

The fourth proportional to 210,530.80, 290,529.02 and 115,035.44 is: 158,747.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,530.80 : 290,529.02 = 115,035.44 : x
  2. Step 2: Convert to fraction form
    210,530.80/290,529.02 = 115,035.44/x
  3. Step 3: Cross multiply
    210,530.80x = 290,529.02 × 115,035.44
  4. Step 4: Simplify right side
    210,530.80x = 33,421,133,648.47
  5. Step 5: Solve for x
    x = 33,421,133,648.47/210,530.80
  6. Step 6: Final answer
    x = 158,747.00

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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.