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Finding the Fourth Proportional to 530,345.05, 731,367.37 and 356,308.45

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Solution

The fourth proportional to 530,345.05, 731,367.37 and 356,308.45 is: 491,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,345.05 : 731,367.37 = 356,308.45 : x
  2. Step 2: Convert to fraction form
    530,345.05/731,367.37 = 356,308.45/x
  3. Step 3: Cross multiply
    530,345.05x = 731,367.37 × 356,308.45
  4. Step 4: Simplify right side
    530,345.05x = 260,592,373,985.28
  5. Step 5: Solve for x
    x = 260,592,373,985.28/530,345.05
  6. Step 6: Final answer
    x = 491,363.83

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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.