Home / 309,709,128.02-427,409,874.42-168,573,531.80

Finding the Fourth Proportional to 309,709,128.02, 427,409,874.42 and 168,573,531.80

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Solution

The fourth proportional to 309,709,128.02, 427,409,874.42 and 168,573,531.80 is: 232,637,612.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,709,128.02 : 427,409,874.42 = 168,573,531.80 : x
  2. Step 2: Convert to fraction form
    309,709,128.02/427,409,874.42 = 168,573,531.80/x
  3. Step 3: Cross multiply
    309,709,128.02x = 427,409,874.42 × 168,573,531.80
  4. Step 4: Simplify right side
    309,709,128.02x = 72,049,992,057,173,888
  5. Step 5: Solve for x
    x = 72,049,992,057,173,888/309,709,128.02
  6. Step 6: Final answer
    x = 232,637,612.32

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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.