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Finding the Fourth Proportional to 386,595.60, 579,886.08 and 158,842.80

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Solution

The fourth proportional to 386,595.60, 579,886.08 and 158,842.80 is: 238,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,595.60 : 579,886.08 = 158,842.80 : x
  2. Step 2: Convert to fraction form
    386,595.60/579,886.08 = 158,842.80/x
  3. Step 3: Cross multiply
    386,595.60x = 579,886.08 × 158,842.80
  4. Step 4: Simplify right side
    386,595.60x = 92,110,728,628.22
  5. Step 5: Solve for x
    x = 92,110,728,628.22/386,595.60
  6. Step 6: Final answer
    x = 238,261.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.