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Finding the Fourth Proportional to 345,883.48, 515,386.64 and 308,153.63

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Solution

The fourth proportional to 345,883.48, 515,386.64 and 308,153.63 is: 459,166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,883.48 : 515,386.64 = 308,153.63 : x
  2. Step 2: Convert to fraction form
    345,883.48/515,386.64 = 308,153.63/x
  3. Step 3: Cross multiply
    345,883.48x = 515,386.64 × 308,153.63
  4. Step 4: Simplify right side
    345,883.48x = 158,818,266,028.35
  5. Step 5: Solve for x
    x = 158,818,266,028.35/345,883.48
  6. Step 6: Final answer
    x = 459,166.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.