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Finding the Fourth Proportional to 351,439.66, 485,058.27 and 238,298.86

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Solution

The fourth proportional to 351,439.66, 485,058.27 and 238,298.86 is: 328,900.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,439.66 : 485,058.27 = 238,298.86 : x
  2. Step 2: Convert to fraction form
    351,439.66/485,058.27 = 238,298.86/x
  3. Step 3: Cross multiply
    351,439.66x = 485,058.27 × 238,298.86
  4. Step 4: Simplify right side
    351,439.66x = 115,588,832,774.57
  5. Step 5: Solve for x
    x = 115,588,832,774.57/351,439.66
  6. Step 6: Final answer
    x = 328,900.94

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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.