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Finding the Fourth Proportional to 386,541.87, 533,426.76 and 216,779.64

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Solution

The fourth proportional to 386,541.87, 533,426.76 and 216,779.64 is: 299,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,541.87 : 533,426.76 = 216,779.64 : x
  2. Step 2: Convert to fraction form
    386,541.87/533,426.76 = 216,779.64/x
  3. Step 3: Cross multiply
    386,541.87x = 533,426.76 × 216,779.64
  4. Step 4: Simplify right side
    386,541.87x = 115,636,060,999.17
  5. Step 5: Solve for x
    x = 115,636,060,999.17/386,541.87
  6. Step 6: Final answer
    x = 299,155.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.