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Finding the Fourth Proportional to 591,281.08, 815,967.73 and 319,348.90

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Solution

The fourth proportional to 591,281.08, 815,967.73 and 319,348.90 is: 440,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,281.08 : 815,967.73 = 319,348.90 : x
  2. Step 2: Convert to fraction form
    591,281.08/815,967.73 = 319,348.90/x
  3. Step 3: Cross multiply
    591,281.08x = 815,967.73 × 319,348.90
  4. Step 4: Simplify right side
    591,281.08x = 260,578,397,011.00
  5. Step 5: Solve for x
    x = 260,578,397,011.00/591,281.08
  6. Step 6: Final answer
    x = 440,701.40

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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.