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Finding the Fourth Proportional to 508,356.04, 761,517.40 and 305,840.45

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Solution

The fourth proportional to 508,356.04, 761,517.40 and 305,840.45 is: 458,149.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,356.04 : 761,517.40 = 305,840.45 : x
  2. Step 2: Convert to fraction form
    508,356.04/761,517.40 = 305,840.45/x
  3. Step 3: Cross multiply
    508,356.04x = 761,517.40 × 305,840.45
  4. Step 4: Simplify right side
    508,356.04x = 232,902,818,962.04
  5. Step 5: Solve for x
    x = 232,902,818,962.04/508,356.04
  6. Step 6: Final answer
    x = 458,149.02

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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.