Home / 318,705.03-478,106.55-108,293.76

Finding the Fourth Proportional to 318,705.03, 478,106.55 and 108,293.76

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Solution

The fourth proportional to 318,705.03, 478,106.55 and 108,293.76 is: 162,457.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,705.03 : 478,106.55 = 108,293.76 : x
  2. Step 2: Convert to fraction form
    318,705.03/478,106.55 = 108,293.76/x
  3. Step 3: Cross multiply
    318,705.03x = 478,106.55 × 108,293.76
  4. Step 4: Simplify right side
    318,705.03x = 51,775,955,980.13
  5. Step 5: Solve for x
    x = 51,775,955,980.13/318,705.03
  6. Step 6: Final answer
    x = 162,457.29

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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.