Home / 401,780.20-602,692.18-121,290.16

Finding the Fourth Proportional to 401,780.20, 602,692.18 and 121,290.16

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Solution

The fourth proportional to 401,780.20, 602,692.18 and 121,290.16 is: 181,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,780.20 : 602,692.18 = 121,290.16 : x
  2. Step 2: Convert to fraction form
    401,780.20/602,692.18 = 121,290.16/x
  3. Step 3: Cross multiply
    401,780.20x = 602,692.18 × 121,290.16
  4. Step 4: Simplify right side
    401,780.20x = 73,100,630,942.95
  5. Step 5: Solve for x
    x = 73,100,630,942.95/401,780.20
  6. Step 6: Final answer
    x = 181,941.85

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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.