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Finding the Fourth Proportional to 347,418.90, 478,443.18 and 298,626.93

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Solution

The fourth proportional to 347,418.90, 478,443.18 and 298,626.93 is: 411,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,418.90 : 478,443.18 = 298,626.93 : x
  2. Step 2: Convert to fraction form
    347,418.90/478,443.18 = 298,626.93/x
  3. Step 3: Cross multiply
    347,418.90x = 478,443.18 × 298,626.93
  4. Step 4: Simplify right side
    347,418.90x = 142,876,018,022.84
  5. Step 5: Solve for x
    x = 142,876,018,022.84/347,418.90
  6. Step 6: Final answer
    x = 411,249.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.