Home / 318,699.03-478,048.59-105,409.74

Finding the Fourth Proportional to 318,699.03, 478,048.59 and 105,409.74

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Solution

The fourth proportional to 318,699.03, 478,048.59 and 105,409.74 is: 158,114.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,699.03 : 478,048.59 = 105,409.74 : x
  2. Step 2: Convert to fraction form
    318,699.03/478,048.59 = 105,409.74/x
  3. Step 3: Cross multiply
    318,699.03x = 478,048.59 × 105,409.74
  4. Step 4: Simplify right side
    318,699.03x = 50,390,977,579.27
  5. Step 5: Solve for x
    x = 50,390,977,579.27/318,699.03
  6. Step 6: Final answer
    x = 158,114.62

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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.