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Finding the Fourth Proportional to 620,155.62, 930,066.89 and 170,769.51

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Solution

The fourth proportional to 620,155.62, 930,066.89 and 170,769.51 is: 256,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,155.62 : 930,066.89 = 170,769.51 : x
  2. Step 2: Convert to fraction form
    620,155.62/930,066.89 = 170,769.51/x
  3. Step 3: Cross multiply
    620,155.62x = 930,066.89 × 170,769.51
  4. Step 4: Simplify right side
    620,155.62x = 158,827,066,218.68
  5. Step 5: Solve for x
    x = 158,827,066,218.68/620,155.62
  6. Step 6: Final answer
    x = 256,108.40

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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.