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Finding the Fourth Proportional to 620,729.72, 931,075.91 and 171,477.46

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Solution

The fourth proportional to 620,729.72, 931,075.91 and 171,477.46 is: 257,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,729.72 : 931,075.91 = 171,477.46 : x
  2. Step 2: Convert to fraction form
    620,729.72/931,075.91 = 171,477.46/x
  3. Step 3: Cross multiply
    620,729.72x = 931,075.91 × 171,477.46
  4. Step 4: Simplify right side
    620,729.72x = 159,658,532,113.99
  5. Step 5: Solve for x
    x = 159,658,532,113.99/620,729.72
  6. Step 6: Final answer
    x = 257,211.03

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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.