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Finding the Fourth Proportional to 554,445.78, 831,543.18 and 254,638.14

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Solution

The fourth proportional to 554,445.78, 831,543.18 and 254,638.14 is: 381,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,445.78 : 831,543.18 = 254,638.14 : x
  2. Step 2: Convert to fraction form
    554,445.78/831,543.18 = 254,638.14/x
  3. Step 3: Cross multiply
    554,445.78x = 831,543.18 × 254,638.14
  4. Step 4: Simplify right side
    554,445.78x = 211,742,608,684.89
  5. Step 5: Solve for x
    x = 211,742,608,684.89/554,445.78
  6. Step 6: Final answer
    x = 381,899.58

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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.