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Finding the Fourth Proportional to 400,970.50, 553,339.29 and 239,832.34

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Solution

The fourth proportional to 400,970.50, 553,339.29 and 239,832.34 is: 330,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,970.50 : 553,339.29 = 239,832.34 : x
  2. Step 2: Convert to fraction form
    400,970.50/553,339.29 = 239,832.34/x
  3. Step 3: Cross multiply
    400,970.50x = 553,339.29 × 239,832.34
  4. Step 4: Simplify right side
    400,970.50x = 132,708,656,734.64
  5. Step 5: Solve for x
    x = 132,708,656,734.64/400,970.50
  6. Step 6: Final answer
    x = 330,968.63

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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.