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Finding the Fourth Proportional to 382,689.30, 574,252.65 and 146,201.70

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Solution

The fourth proportional to 382,689.30, 574,252.65 and 146,201.70 is: 219,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,689.30 : 574,252.65 = 146,201.70 : x
  2. Step 2: Convert to fraction form
    382,689.30/574,252.65 = 146,201.70/x
  3. Step 3: Cross multiply
    382,689.30x = 574,252.65 × 146,201.70
  4. Step 4: Simplify right side
    382,689.30x = 83,956,713,659.51
  5. Step 5: Solve for x
    x = 83,956,713,659.51/382,689.30
  6. Step 6: Final answer
    x = 219,386.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.