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Finding the Fourth Proportional to 304,267.80, 456,401.70 and 138,055.80

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Solution

The fourth proportional to 304,267.80, 456,401.70 and 138,055.80 is: 207,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,267.80 : 456,401.70 = 138,055.80 : x
  2. Step 2: Convert to fraction form
    304,267.80/456,401.70 = 138,055.80/x
  3. Step 3: Cross multiply
    304,267.80x = 456,401.70 × 138,055.80
  4. Step 4: Simplify right side
    304,267.80x = 63,008,901,814.86
  5. Step 5: Solve for x
    x = 63,008,901,814.86/304,267.80
  6. Step 6: Final answer
    x = 207,083.70

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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.