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Finding the Fourth Proportional to 554,346.90, 831,909.15 and 355,151.70

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Solution

The fourth proportional to 554,346.90, 831,909.15 and 355,151.70 is: 532,976.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,346.90 : 831,909.15 = 355,151.70 : x
  2. Step 2: Convert to fraction form
    554,346.90/831,909.15 = 355,151.70/x
  3. Step 3: Cross multiply
    554,346.90x = 831,909.15 × 355,151.70
  4. Step 4: Simplify right side
    554,346.90x = 295,453,948,868.06
  5. Step 5: Solve for x
    x = 295,453,948,868.06/554,346.90
  6. Step 6: Final answer
    x = 532,976.64

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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.