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Finding the Fourth Proportional to 551,276.83, 760,840.68 and 309,575.92

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Solution

The fourth proportional to 551,276.83, 760,840.68 and 309,575.92 is: 427,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,276.83 : 760,840.68 = 309,575.92 : x
  2. Step 2: Convert to fraction form
    551,276.83/760,840.68 = 309,575.92/x
  3. Step 3: Cross multiply
    551,276.83x = 760,840.68 × 309,575.92
  4. Step 4: Simplify right side
    551,276.83x = 235,537,953,484.43
  5. Step 5: Solve for x
    x = 235,537,953,484.43/551,276.83
  6. Step 6: Final answer
    x = 427,258.94

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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.