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Finding the Fourth Proportional to 587,227.50, 810,374.76 and 318,955.50

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Solution

The fourth proportional to 587,227.50, 810,374.76 and 318,955.50 is: 440,159.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,227.50 : 810,374.76 = 318,955.50 : x
  2. Step 2: Convert to fraction form
    587,227.50/810,374.76 = 318,955.50/x
  3. Step 3: Cross multiply
    587,227.50x = 810,374.76 × 318,955.50
  4. Step 4: Simplify right side
    587,227.50x = 258,473,486,763.18
  5. Step 5: Solve for x
    x = 258,473,486,763.18/587,227.50
  6. Step 6: Final answer
    x = 440,159.03

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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.