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Finding the Fourth Proportional to 235,740.52, 353,599.26 and 87,985

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Solution

The fourth proportional to 235,740.52, 353,599.26 and 87,985 is: 131,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,740.52 : 353,599.26 = 87,985 : x
  2. Step 2: Convert to fraction form
    235,740.52/353,599.26 = 87,985/x
  3. Step 3: Cross multiply
    235,740.52x = 353,599.26 × 87,985
  4. Step 4: Simplify right side
    235,740.52x = 31,111,430,891.10
  5. Step 5: Solve for x
    x = 31,111,430,891.10/235,740.52
  6. Step 6: Final answer
    x = 131,973.20

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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.