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Finding the Fourth Proportional to 330,813.63, 456,354.45 and 216,159.30

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Solution

The fourth proportional to 330,813.63, 456,354.45 and 216,159.30 is: 298,189.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,813.63 : 456,354.45 = 216,159.30 : x
  2. Step 2: Convert to fraction form
    330,813.63/456,354.45 = 216,159.30/x
  3. Step 3: Cross multiply
    330,813.63x = 456,354.45 × 216,159.30
  4. Step 4: Simplify right side
    330,813.63x = 98,645,258,463.89
  5. Step 5: Solve for x
    x = 98,645,258,463.89/330,813.63
  6. Step 6: Final answer
    x = 298,189.83

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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.