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Finding the Fourth Proportional to 386,317.60, 579,476.40 and 176,365.60

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Solution

The fourth proportional to 386,317.60, 579,476.40 and 176,365.60 is: 264,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,317.60 : 579,476.40 = 176,365.60 : x
  2. Step 2: Convert to fraction form
    386,317.60/579,476.40 = 176,365.60/x
  3. Step 3: Cross multiply
    386,317.60x = 579,476.40 × 176,365.60
  4. Step 4: Simplify right side
    386,317.60x = 102,199,702,971.84
  5. Step 5: Solve for x
    x = 102,199,702,971.84/386,317.60
  6. Step 6: Final answer
    x = 264,548.40

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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.