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Finding the Fourth Proportional to 355,280.10, 532,920.15 and 307,587.30

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Solution

The fourth proportional to 355,280.10, 532,920.15 and 307,587.30 is: 461,380.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,280.10 : 532,920.15 = 307,587.30 : x
  2. Step 2: Convert to fraction form
    355,280.10/532,920.15 = 307,587.30/x
  3. Step 3: Cross multiply
    355,280.10x = 532,920.15 × 307,587.30
  4. Step 4: Simplify right side
    355,280.10x = 163,919,470,054.10
  5. Step 5: Solve for x
    x = 163,919,470,054.10/355,280.10
  6. Step 6: Final answer
    x = 461,380.95

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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.