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Finding the Fourth Proportional to 272,186.30, 408,225.98 and 258,683.88

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Solution

The fourth proportional to 272,186.30, 408,225.98 and 258,683.88 is: 387,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,186.30 : 408,225.98 = 258,683.88 : x
  2. Step 2: Convert to fraction form
    272,186.30/408,225.98 = 258,683.88/x
  3. Step 3: Cross multiply
    272,186.30x = 408,225.98 × 258,683.88
  4. Step 4: Simplify right side
    272,186.30x = 105,601,480,423.20
  5. Step 5: Solve for x
    x = 105,601,480,423.20/272,186.30
  6. Step 6: Final answer
    x = 387,975.00

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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.