Home / 304,485,678.60-420,190,644.06-165,256,442.34

Finding the Fourth Proportional to 304,485,678.60, 420,190,644.06 and 165,256,442.34

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Solution

The fourth proportional to 304,485,678.60, 420,190,644.06 and 165,256,442.34 is: 228,054,111.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,485,678.60 : 420,190,644.06 = 165,256,442.34 : x
  2. Step 2: Convert to fraction form
    304,485,678.60/420,190,644.06 = 165,256,442.34/x
  3. Step 3: Cross multiply
    304,485,678.60x = 420,190,644.06 × 165,256,442.34
  4. Step 4: Simplify right side
    304,485,678.60x = 69,439,210,941,908,856
  5. Step 5: Solve for x
    x = 69,439,210,941,908,856/304,485,678.60
  6. Step 6: Final answer
    x = 228,054,111.65

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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.