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Finding the Fourth Proportional to 369,035.80, 553,208.10 and 289,029.40

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Solution

The fourth proportional to 369,035.80, 553,208.10 and 289,029.40 is: 433,273.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,035.80 : 553,208.10 = 289,029.40 : x
  2. Step 2: Convert to fraction form
    369,035.80/553,208.10 = 289,029.40/x
  3. Step 3: Cross multiply
    369,035.80x = 553,208.10 × 289,029.40
  4. Step 4: Simplify right side
    369,035.80x = 159,893,405,218.14
  5. Step 5: Solve for x
    x = 159,893,405,218.14/369,035.80
  6. Step 6: Final answer
    x = 433,273.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.