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Finding the Fourth Proportional to 403,005.40, 603,989.70 and 245,066.20

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Solution

The fourth proportional to 403,005.40, 603,989.70 and 245,066.20 is: 367,284.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,005.40 : 603,989.70 = 245,066.20 : x
  2. Step 2: Convert to fraction form
    403,005.40/603,989.70 = 245,066.20/x
  3. Step 3: Cross multiply
    403,005.40x = 603,989.70 × 245,066.20
  4. Step 4: Simplify right side
    403,005.40x = 148,017,460,618.14
  5. Step 5: Solve for x
    x = 148,017,460,618.14/403,005.40
  6. Step 6: Final answer
    x = 367,284.06

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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.