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Finding the Fourth Proportional to 404,690.10, 607,035.15 and 138,426.90

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Solution

The fourth proportional to 404,690.10, 607,035.15 and 138,426.90 is: 207,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,690.10 : 607,035.15 = 138,426.90 : x
  2. Step 2: Convert to fraction form
    404,690.10/607,035.15 = 138,426.90/x
  3. Step 3: Cross multiply
    404,690.10x = 607,035.15 × 138,426.90
  4. Step 4: Simplify right side
    404,690.10x = 84,029,994,005.54
  5. Step 5: Solve for x
    x = 84,029,994,005.54/404,690.10
  6. Step 6: Final answer
    x = 207,640.35

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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.