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Finding the Fourth Proportional to 409,118.76, 564,583.77 and 239,385.78

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Solution

The fourth proportional to 409,118.76, 564,583.77 and 239,385.78 is: 330,352.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,118.76 : 564,583.77 = 239,385.78 : x
  2. Step 2: Convert to fraction form
    409,118.76/564,583.77 = 239,385.78/x
  3. Step 3: Cross multiply
    409,118.76x = 564,583.77 × 239,385.78
  4. Step 4: Simplify right side
    409,118.76x = 135,153,326,156.79
  5. Step 5: Solve for x
    x = 135,153,326,156.79/409,118.76
  6. Step 6: Final answer
    x = 330,352.31

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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.