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Finding the Fourth Proportional to 418,683.33, 628,026.81 and 134,417.07

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Solution

The fourth proportional to 418,683.33, 628,026.81 and 134,417.07 is: 201,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,683.33 : 628,026.81 = 134,417.07 : x
  2. Step 2: Convert to fraction form
    418,683.33/628,026.81 = 134,417.07/x
  3. Step 3: Cross multiply
    418,683.33x = 628,026.81 × 134,417.07
  4. Step 4: Simplify right side
    418,683.33x = 84,417,523,681.65
  5. Step 5: Solve for x
    x = 84,417,523,681.65/418,683.33
  6. Step 6: Final answer
    x = 201,626.19

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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.