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Finding the Fourth Proportional to 172,328.40, 258,504.88 and 45,967.92

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Solution

The fourth proportional to 172,328.40, 258,504.88 and 45,967.92 is: 68,955.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,328.40 : 258,504.88 = 45,967.92 : x
  2. Step 2: Convert to fraction form
    172,328.40/258,504.88 = 45,967.92/x
  3. Step 3: Cross multiply
    172,328.40x = 258,504.88 × 45,967.92
  4. Step 4: Simplify right side
    172,328.40x = 11,882,931,643.45
  5. Step 5: Solve for x
    x = 11,882,931,643.45/172,328.40
  6. Step 6: Final answer
    x = 68,955.16

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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.