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Finding the Fourth Proportional to 345,280.79, 517,888.38 and 120,599.75

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Solution

The fourth proportional to 345,280.79, 517,888.38 and 120,599.75 is: 180,888.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,280.79 : 517,888.38 = 120,599.75 : x
  2. Step 2: Convert to fraction form
    345,280.79/517,888.38 = 120,599.75/x
  3. Step 3: Cross multiply
    345,280.79x = 517,888.38 × 120,599.75
  4. Step 4: Simplify right side
    345,280.79x = 62,457,209,155.91
  5. Step 5: Solve for x
    x = 62,457,209,155.91/345,280.79
  6. Step 6: Final answer
    x = 180,888.17

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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.