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Finding the Fourth Proportional to 515,567.76, 773,437.29 and 216,070.87

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Solution

The fourth proportional to 515,567.76, 773,437.29 and 216,070.87 is: 324,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,567.76 : 773,437.29 = 216,070.87 : x
  2. Step 2: Convert to fraction form
    515,567.76/773,437.29 = 216,070.87/x
  3. Step 3: Cross multiply
    515,567.76x = 773,437.29 × 216,070.87
  4. Step 4: Simplify right side
    515,567.76x = 167,117,268,140.74
  5. Step 5: Solve for x
    x = 167,117,268,140.74/515,567.76
  6. Step 6: Final answer
    x = 324,142.20

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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.