Home / 354,998,417.31-489,946,482.41-204,287,975.78

Finding the Fourth Proportional to 354,998,417.31, 489,946,482.41 and 204,287,975.78

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Solution

The fourth proportional to 354,998,417.31, 489,946,482.41 and 204,287,975.78 is: 281,945,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,998,417.31 : 489,946,482.41 = 204,287,975.78 : x
  2. Step 2: Convert to fraction form
    354,998,417.31/489,946,482.41 = 204,287,975.78/x
  3. Step 3: Cross multiply
    354,998,417.31x = 489,946,482.41 × 204,287,975.78
  4. Step 4: Simplify right side
    354,998,417.31x = 100,090,175,128,599,104
  5. Step 5: Solve for x
    x = 100,090,175,128,599,104/354,998,417.31
  6. Step 6: Final answer
    x = 281,945,412.28

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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.