Home / 386,272.08-579,425.40-105,783.12

Finding the Fourth Proportional to 386,272.08, 579,425.40 and 105,783.12

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Solution

The fourth proportional to 386,272.08, 579,425.40 and 105,783.12 is: 158,679.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,272.08 : 579,425.40 = 105,783.12 : x
  2. Step 2: Convert to fraction form
    386,272.08/579,425.40 = 105,783.12/x
  3. Step 3: Cross multiply
    386,272.08x = 579,425.40 × 105,783.12
  4. Step 4: Simplify right side
    386,272.08x = 61,293,426,619.25
  5. Step 5: Solve for x
    x = 61,293,426,619.25/386,272.08
  6. Step 6: Final answer
    x = 158,679.41

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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.