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Finding the Fourth Proportional to 208,008.57, 312,059.52 and 65,862.35

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Solution

The fourth proportional to 208,008.57, 312,059.52 and 65,862.35 is: 98,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,008.57 : 312,059.52 = 65,862.35 : x
  2. Step 2: Convert to fraction form
    208,008.57/312,059.52 = 65,862.35/x
  3. Step 3: Cross multiply
    208,008.57x = 312,059.52 × 65,862.35
  4. Step 4: Simplify right side
    208,008.57x = 20,552,973,327.07
  5. Step 5: Solve for x
    x = 20,552,973,327.07/208,008.57
  6. Step 6: Final answer
    x = 98,808.30

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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.