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Finding the Fourth Proportional to 620,728.32, 931,073.88 and 171,476.04

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Solution

The fourth proportional to 620,728.32, 931,073.88 and 171,476.04 is: 257,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,728.32 : 931,073.88 = 171,476.04 : x
  2. Step 2: Convert to fraction form
    620,728.32/931,073.88 = 171,476.04/x
  3. Step 3: Cross multiply
    620,728.32x = 931,073.88 × 171,476.04
  4. Step 4: Simplify right side
    620,728.32x = 159,656,861,889.84
  5. Step 5: Solve for x
    x = 159,656,861,889.84/620,728.32
  6. Step 6: Final answer
    x = 257,208.92

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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.