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Finding the Fourth Proportional to 620,212.84, 930,142.14 and 170,820.52

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Solution

The fourth proportional to 620,212.84, 930,142.14 and 170,820.52 is: 256,182.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,212.84 : 930,142.14 = 170,820.52 : x
  2. Step 2: Convert to fraction form
    620,212.84/930,142.14 = 170,820.52/x
  3. Step 3: Cross multiply
    620,212.84x = 930,142.14 × 170,820.52
  4. Step 4: Simplify right side
    620,212.84x = 158,887,364,028.71
  5. Step 5: Solve for x
    x = 158,887,364,028.71/620,212.84
  6. Step 6: Final answer
    x = 256,182.00

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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.