Home / 330,142,962-455,117,112.72-230,715,021.36

Finding the Fourth Proportional to 330,142,962, 455,117,112.72 and 230,715,021.36

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Solution

The fourth proportional to 330,142,962, 455,117,112.72 and 230,715,021.36 is: 318,051,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,142,962 : 455,117,112.72 = 230,715,021.36 : x
  2. Step 2: Convert to fraction form
    330,142,962/455,117,112.72 = 230,715,021.36/x
  3. Step 3: Cross multiply
    330,142,962x = 455,117,112.72 × 230,715,021.36
  4. Step 4: Simplify right side
    330,142,962x = 105,002,354,382,496,336
  5. Step 5: Solve for x
    x = 105,002,354,382,496,336/330,142,962
  6. Step 6: Final answer
    x = 318,051,167.13

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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.