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Finding the Fourth Proportional to 554,382.40, 831,962.40 and 355,187.20

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Solution

The fourth proportional to 554,382.40, 831,962.40 and 355,187.20 is: 533,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,382.40 : 831,962.40 = 355,187.20 : x
  2. Step 2: Convert to fraction form
    554,382.40/831,962.40 = 355,187.20/x
  3. Step 3: Cross multiply
    554,382.40x = 831,962.40 × 355,187.20
  4. Step 4: Simplify right side
    554,382.40x = 295,502,395,361.28
  5. Step 5: Solve for x
    x = 295,502,395,361.28/554,382.40
  6. Step 6: Final answer
    x = 533,029.90

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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.