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Finding the Fourth Proportional to 619,594.40, 929,401.86 and 170,312.51

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Solution

The fourth proportional to 619,594.40, 929,401.86 and 170,312.51 is: 255,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,594.40 : 929,401.86 = 170,312.51 : x
  2. Step 2: Convert to fraction form
    619,594.40/929,401.86 = 170,312.51/x
  3. Step 3: Cross multiply
    619,594.40x = 929,401.86 × 170,312.51
  4. Step 4: Simplify right side
    619,594.40x = 158,288,758,928.26
  5. Step 5: Solve for x
    x = 158,288,758,928.26/619,594.40
  6. Step 6: Final answer
    x = 255,471.58

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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.