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Finding the Fourth Proportional to 450,322.71, 621,343.59 and 268,999.15

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Solution

The fourth proportional to 450,322.71, 621,343.59 and 268,999.15 is: 371,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,322.71 : 621,343.59 = 268,999.15 : x
  2. Step 2: Convert to fraction form
    450,322.71/621,343.59 = 268,999.15/x
  3. Step 3: Cross multiply
    450,322.71x = 621,343.59 × 268,999.15
  4. Step 4: Simplify right side
    450,322.71x = 167,140,897,567.95
  5. Step 5: Solve for x
    x = 167,140,897,567.95/450,322.71
  6. Step 6: Final answer
    x = 371,158.05

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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.