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Finding the Fourth Proportional to 176,428.80, 264,643.20 and 134,438.40

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Solution

The fourth proportional to 176,428.80, 264,643.20 and 134,438.40 is: 201,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,428.80 : 264,643.20 = 134,438.40 : x
  2. Step 2: Convert to fraction form
    176,428.80/264,643.20 = 134,438.40/x
  3. Step 3: Cross multiply
    176,428.80x = 264,643.20 × 134,438.40
  4. Step 4: Simplify right side
    176,428.80x = 35,578,208,378.88
  5. Step 5: Solve for x
    x = 35,578,208,378.88/176,428.80
  6. Step 6: Final answer
    x = 201,657.60

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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.