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Finding the Fourth Proportional to 313,876.30, 470,814.45 and 103,486.90

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Solution

The fourth proportional to 313,876.30, 470,814.45 and 103,486.90 is: 155,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,876.30 : 470,814.45 = 103,486.90 : x
  2. Step 2: Convert to fraction form
    313,876.30/470,814.45 = 103,486.90/x
  3. Step 3: Cross multiply
    313,876.30x = 470,814.45 × 103,486.90
  4. Step 4: Simplify right side
    313,876.30x = 48,723,127,905.71
  5. Step 5: Solve for x
    x = 48,723,127,905.71/313,876.30
  6. Step 6: Final answer
    x = 155,230.35

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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.