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Finding the Fourth Proportional to 348,513.30, 521,603.55 and 243,537.30

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Solution

The fourth proportional to 348,513.30, 521,603.55 and 243,537.30 is: 364,490.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,513.30 : 521,603.55 = 243,537.30 : x
  2. Step 2: Convert to fraction form
    348,513.30/521,603.55 = 243,537.30/x
  3. Step 3: Cross multiply
    348,513.30x = 521,603.55 × 243,537.30
  4. Step 4: Simplify right side
    348,513.30x = 127,029,920,237.42
  5. Step 5: Solve for x
    x = 127,029,920,237.42/348,513.30
  6. Step 6: Final answer
    x = 364,490.88

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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.