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Finding the Fourth Proportional to 306,029.40, 459,108.90 and 92,779.80

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Solution

The fourth proportional to 306,029.40, 459,108.90 and 92,779.80 is: 139,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,029.40 : 459,108.90 = 92,779.80 : x
  2. Step 2: Convert to fraction form
    306,029.40/459,108.90 = 92,779.80/x
  3. Step 3: Cross multiply
    306,029.40x = 459,108.90 × 92,779.80
  4. Step 4: Simplify right side
    306,029.40x = 42,596,031,920.22
  5. Step 5: Solve for x
    x = 42,596,031,920.22/306,029.40
  6. Step 6: Final answer
    x = 139,189.35

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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.