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Finding the Fourth Proportional to 398,554.02, 550,158.08 and 291,970.58

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Solution

The fourth proportional to 398,554.02, 550,158.08 and 291,970.58 is: 403,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,554.02 : 550,158.08 = 291,970.58 : x
  2. Step 2: Convert to fraction form
    398,554.02/550,158.08 = 291,970.58/x
  3. Step 3: Cross multiply
    398,554.02x = 550,158.08 × 291,970.58
  4. Step 4: Simplify right side
    398,554.02x = 160,629,969,498.64
  5. Step 5: Solve for x
    x = 160,629,969,498.64/398,554.02
  6. Step 6: Final answer
    x = 403,031.86

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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.