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Finding the Fourth Proportional to 358,659.40, 537,989.10 and 172,035.40

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Solution

The fourth proportional to 358,659.40, 537,989.10 and 172,035.40 is: 258,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,659.40 : 537,989.10 = 172,035.40 : x
  2. Step 2: Convert to fraction form
    358,659.40/537,989.10 = 172,035.40/x
  3. Step 3: Cross multiply
    358,659.40x = 537,989.10 × 172,035.40
  4. Step 4: Simplify right side
    358,659.40x = 92,553,170,014.14
  5. Step 5: Solve for x
    x = 92,553,170,014.14/358,659.40
  6. Step 6: Final answer
    x = 258,053.10

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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.