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Finding the Fourth Proportional to 345,187.62, 517,769.15 and 120,547.17

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Solution

The fourth proportional to 345,187.62, 517,769.15 and 120,547.17 is: 180,816.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,187.62 : 517,769.15 = 120,547.17 : x
  2. Step 2: Convert to fraction form
    345,187.62/517,769.15 = 120,547.17/x
  3. Step 3: Cross multiply
    345,187.62x = 517,769.15 × 120,547.17
  4. Step 4: Simplify right side
    345,187.62x = 62,415,605,143.07
  5. Step 5: Solve for x
    x = 62,415,605,143.07/345,187.62
  6. Step 6: Final answer
    x = 180,816.46

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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.