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Finding the Fourth Proportional to 401,345.70, 601,641.89 and 134,919.89

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Solution

The fourth proportional to 401,345.70, 601,641.89 and 134,919.89 is: 202,253.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,345.70 : 601,641.89 = 134,919.89 : x
  2. Step 2: Convert to fraction form
    401,345.70/601,641.89 = 134,919.89/x
  3. Step 3: Cross multiply
    401,345.70x = 601,641.89 × 134,919.89
  4. Step 4: Simplify right side
    401,345.70x = 81,173,457,618.19
  5. Step 5: Solve for x
    x = 81,173,457,618.19/401,345.70
  6. Step 6: Final answer
    x = 202,253.21

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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.