Home / 287,078,063.09-396,169,719.93-163,318,740.21

Finding the Fourth Proportional to 287,078,063.09, 396,169,719.93 and 163,318,740.21

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Solution

The fourth proportional to 287,078,063.09, 396,169,719.93 and 163,318,740.21 is: 225,380,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,078,063.09 : 396,169,719.93 = 163,318,740.21 : x
  2. Step 2: Convert to fraction form
    287,078,063.09/396,169,719.93 = 163,318,740.21/x
  3. Step 3: Cross multiply
    287,078,063.09x = 396,169,719.93 × 163,318,740.21
  4. Step 4: Simplify right side
    287,078,063.09x = 64,701,939,568,316,136
  5. Step 5: Solve for x
    x = 64,701,939,568,316,136/287,078,063.09
  6. Step 6: Final answer
    x = 225,380,995.24

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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.