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Finding the Fourth Proportional to 385,308.60, 577,962.90 and 259,337.40

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Solution

The fourth proportional to 385,308.60, 577,962.90 and 259,337.40 is: 389,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,308.60 : 577,962.90 = 259,337.40 : x
  2. Step 2: Convert to fraction form
    385,308.60/577,962.90 = 259,337.40/x
  3. Step 3: Cross multiply
    385,308.60x = 577,962.90 × 259,337.40
  4. Step 4: Simplify right side
    385,308.60x = 149,887,395,782.46
  5. Step 5: Solve for x
    x = 149,887,395,782.46/385,308.60
  6. Step 6: Final answer
    x = 389,006.10

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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.