Home / 318,984.45-478,460.76-119,290.16

Finding the Fourth Proportional to 318,984.45, 478,460.76 and 119,290.16

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Solution

The fourth proportional to 318,984.45, 478,460.76 and 119,290.16 is: 178,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,984.45 : 478,460.76 = 119,290.16 : x
  2. Step 2: Convert to fraction form
    318,984.45/478,460.76 = 119,290.16/x
  3. Step 3: Cross multiply
    318,984.45x = 478,460.76 × 119,290.16
  4. Step 4: Simplify right side
    318,984.45x = 57,075,658,221.82
  5. Step 5: Solve for x
    x = 57,075,658,221.82/318,984.45
  6. Step 6: Final answer
    x = 178,929.28

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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.