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Finding the Fourth Proportional to 235,444.72, 324,915.40 and 128,014.64

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Solution

The fourth proportional to 235,444.72, 324,915.40 and 128,014.64 is: 176,661.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,444.72 : 324,915.40 = 128,014.64 : x
  2. Step 2: Convert to fraction form
    235,444.72/324,915.40 = 128,014.64/x
  3. Step 3: Cross multiply
    235,444.72x = 324,915.40 × 128,014.64
  4. Step 4: Simplify right side
    235,444.72x = 41,593,927,961.46
  5. Step 5: Solve for x
    x = 41,593,927,961.46/235,444.72
  6. Step 6: Final answer
    x = 176,661.12

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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.