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Finding the Fourth Proportional to 265,504.94, 398,109.76 and 87,915.06

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Solution

The fourth proportional to 265,504.94, 398,109.76 and 87,915.06 is: 131,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,504.94 : 398,109.76 = 87,915.06 : x
  2. Step 2: Convert to fraction form
    265,504.94/398,109.76 = 87,915.06/x
  3. Step 3: Cross multiply
    265,504.94x = 398,109.76 × 87,915.06
  4. Step 4: Simplify right side
    265,504.94x = 34,999,843,436.99
  5. Step 5: Solve for x
    x = 34,999,843,436.99/265,504.94
  6. Step 6: Final answer
    x = 131,823.70

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1.5x scale

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.