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Finding the Fourth Proportional to 379,222.60, 568,730.22 and 142,547.08

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Solution

The fourth proportional to 379,222.60, 568,730.22 and 142,547.08 is: 213,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,222.60 : 568,730.22 = 142,547.08 : x
  2. Step 2: Convert to fraction form
    379,222.60/568,730.22 = 142,547.08/x
  3. Step 3: Cross multiply
    379,222.60x = 568,730.22 × 142,547.08
  4. Step 4: Simplify right side
    379,222.60x = 81,070,832,168.76
  5. Step 5: Solve for x
    x = 81,070,832,168.76/379,222.60
  6. Step 6: Final answer
    x = 213,781.65

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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.