Home / 420,427.39-630,266.08-154,125.73

Finding the Fourth Proportional to 420,427.39, 630,266.08 and 154,125.73

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Solution

The fourth proportional to 420,427.39, 630,266.08 and 154,125.73 is: 231,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,427.39 : 630,266.08 = 154,125.73 : x
  2. Step 2: Convert to fraction form
    420,427.39/630,266.08 = 154,125.73/x
  3. Step 3: Cross multiply
    420,427.39x = 630,266.08 × 154,125.73
  4. Step 4: Simplify right side
    420,427.39x = 97,140,215,752.28
  5. Step 5: Solve for x
    x = 97,140,215,752.28/420,427.39
  6. Step 6: Final answer
    x = 231,051.11

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1.5x scale

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.