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Finding the Fourth Proportional to 403,737.60, 605,606.40 and 123,218.40

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Solution

The fourth proportional to 403,737.60, 605,606.40 and 123,218.40 is: 184,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,737.60 : 605,606.40 = 123,218.40 : x
  2. Step 2: Convert to fraction form
    403,737.60/605,606.40 = 123,218.40/x
  3. Step 3: Cross multiply
    403,737.60x = 605,606.40 × 123,218.40
  4. Step 4: Simplify right side
    403,737.60x = 74,621,851,637.76
  5. Step 5: Solve for x
    x = 74,621,851,637.76/403,737.60
  6. Step 6: Final answer
    x = 184,827.60

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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.