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Finding the Fourth Proportional to 554,346.40, 831,908.40 and 355,151.20

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Solution

The fourth proportional to 554,346.40, 831,908.40 and 355,151.20 is: 532,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,346.40 : 831,908.40 = 355,151.20 : x
  2. Step 2: Convert to fraction form
    554,346.40/831,908.40 = 355,151.20/x
  3. Step 3: Cross multiply
    554,346.40x = 831,908.40 × 355,151.20
  4. Step 4: Simplify right side
    554,346.40x = 295,453,266,550.08
  5. Step 5: Solve for x
    x = 295,453,266,550.08/554,346.40
  6. Step 6: Final answer
    x = 532,975.89

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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.