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Finding the Fourth Proportional to 429,813.74, 592,991.40 and 245,918

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Solution

The fourth proportional to 429,813.74, 592,991.40 and 245,918 is: 339,280.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,813.74 : 592,991.40 = 245,918 : x
  2. Step 2: Convert to fraction form
    429,813.74/592,991.40 = 245,918/x
  3. Step 3: Cross multiply
    429,813.74x = 592,991.40 × 245,918
  4. Step 4: Simplify right side
    429,813.74x = 145,827,259,105.20
  5. Step 5: Solve for x
    x = 145,827,259,105.20/429,813.74
  6. Step 6: Final answer
    x = 339,280.12

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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.