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Finding the Fourth Proportional to 343,350.84, 515,003.70 and 118,659

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Solution

The fourth proportional to 343,350.84, 515,003.70 and 118,659 is: 177,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,350.84 : 515,003.70 = 118,659 : x
  2. Step 2: Convert to fraction form
    343,350.84/515,003.70 = 118,659/x
  3. Step 3: Cross multiply
    343,350.84x = 515,003.70 × 118,659
  4. Step 4: Simplify right side
    343,350.84x = 61,109,824,038.30
  5. Step 5: Solve for x
    x = 61,109,824,038.30/343,350.84
  6. Step 6: Final answer
    x = 177,980.70

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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.