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Finding the Fourth Proportional to 420,360.84, 630,534.56 and 195,595.56

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Solution

The fourth proportional to 420,360.84, 630,534.56 and 195,595.56 is: 293,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,360.84 : 630,534.56 = 195,595.56 : x
  2. Step 2: Convert to fraction form
    420,360.84/630,534.56 = 195,595.56/x
  3. Step 3: Cross multiply
    420,360.84x = 630,534.56 × 195,595.56
  4. Step 4: Simplify right side
    420,360.84x = 123,329,760,362.55
  5. Step 5: Solve for x
    x = 123,329,760,362.55/420,360.84
  6. Step 6: Final answer
    x = 293,390.22

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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.