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Finding the Fourth Proportional to 260,005.50, 390,008.25 and 63,013.50

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Solution

The fourth proportional to 260,005.50, 390,008.25 and 63,013.50 is: 94,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,005.50 : 390,008.25 = 63,013.50 : x
  2. Step 2: Convert to fraction form
    260,005.50/390,008.25 = 63,013.50/x
  3. Step 3: Cross multiply
    260,005.50x = 390,008.25 × 63,013.50
  4. Step 4: Simplify right side
    260,005.50x = 24,575,784,861.38
  5. Step 5: Solve for x
    x = 24,575,784,861.38/260,005.50
  6. Step 6: Final answer
    x = 94,520.25

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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.