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Finding the Fourth Proportional to 235,599.50, 325,127.32 and 129,615.50

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Solution

The fourth proportional to 235,599.50, 325,127.32 and 129,615.50 is: 178,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,599.50 : 325,127.32 = 129,615.50 : x
  2. Step 2: Convert to fraction form
    235,599.50/325,127.32 = 129,615.50/x
  3. Step 3: Cross multiply
    235,599.50x = 325,127.32 × 129,615.50
  4. Step 4: Simplify right side
    235,599.50x = 42,141,540,145.46
  5. Step 5: Solve for x
    x = 42,141,540,145.46/235,599.50
  6. Step 6: Final answer
    x = 178,869.40

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1.5x scale

Why These Related Problems?

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