Home / 309,497,442.72-427,109,244.90-168,371,738.28

Finding the Fourth Proportional to 309,497,442.72, 427,109,244.90 and 168,371,738.28

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Solution

The fourth proportional to 309,497,442.72, 427,109,244.90 and 168,371,738.28 is: 232,354,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,497,442.72 : 427,109,244.90 = 168,371,738.28 : x
  2. Step 2: Convert to fraction form
    309,497,442.72/427,109,244.90 = 168,371,738.28/x
  3. Step 3: Cross multiply
    309,497,442.72x = 427,109,244.90 × 168,371,738.28
  4. Step 4: Simplify right side
    309,497,442.72x = 71,913,125,999,271,224
  5. Step 5: Solve for x
    x = 71,913,125,999,271,224/309,497,442.72
  6. Step 6: Final answer
    x = 232,354,507.90

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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.