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Finding the Fourth Proportional to 620,597.21, 930,877.21 and 171,345.50

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Solution

The fourth proportional to 620,597.21, 930,877.21 and 171,345.50 is: 257,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,597.21 : 930,877.21 = 171,345.50 : x
  2. Step 2: Convert to fraction form
    620,597.21/930,877.21 = 171,345.50/x
  3. Step 3: Cross multiply
    620,597.21x = 930,877.21 × 171,345.50
  4. Step 4: Simplify right side
    620,597.21x = 159,501,620,986.06
  5. Step 5: Solve for x
    x = 159,501,620,986.06/620,597.21
  6. Step 6: Final answer
    x = 257,013.11

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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.