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Finding the Fourth Proportional to 403,245.40, 604,868.10 and 206,637.40

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Solution

The fourth proportional to 403,245.40, 604,868.10 and 206,637.40 is: 309,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,245.40 : 604,868.10 = 206,637.40 : x
  2. Step 2: Convert to fraction form
    403,245.40/604,868.10 = 206,637.40/x
  3. Step 3: Cross multiply
    403,245.40x = 604,868.10 × 206,637.40
  4. Step 4: Simplify right side
    403,245.40x = 124,988,371,526.94
  5. Step 5: Solve for x
    x = 124,988,371,526.94/403,245.40
  6. Step 6: Final answer
    x = 309,956.10

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Similar ratio
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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.