Home / 287,725.13-397,051.58-158,669.05

Finding the Fourth Proportional to 287,725.13, 397,051.58 and 158,669.05

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Solution

The fourth proportional to 287,725.13, 397,051.58 and 158,669.05 is: 218,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,725.13 : 397,051.58 = 158,669.05 : x
  2. Step 2: Convert to fraction form
    287,725.13/397,051.58 = 158,669.05/x
  3. Step 3: Cross multiply
    287,725.13x = 397,051.58 × 158,669.05
  4. Step 4: Simplify right side
    287,725.13x = 62,999,796,403.64
  5. Step 5: Solve for x
    x = 62,999,796,403.64/287,725.13
  6. Step 6: Final answer
    x = 218,958.27

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1.5x scale

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.