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Finding the Fourth Proportional to 361,442.34, 498,803.31 and 218,174.40

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Solution

The fourth proportional to 361,442.34, 498,803.31 and 218,174.40 is: 301,088.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,442.34 : 498,803.31 = 218,174.40 : x
  2. Step 2: Convert to fraction form
    361,442.34/498,803.31 = 218,174.40/x
  3. Step 3: Cross multiply
    361,442.34x = 498,803.31 × 218,174.40
  4. Step 4: Simplify right side
    361,442.34x = 108,826,112,877.26
  5. Step 5: Solve for x
    x = 108,826,112,877.26/361,442.34
  6. Step 6: Final answer
    x = 301,088.45

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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.