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Finding the Fourth Proportional to 554,509.72, 831,664.38 and 155,051.80

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Solution

The fourth proportional to 554,509.72, 831,664.38 and 155,051.80 is: 232,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,509.72 : 831,664.38 = 155,051.80 : x
  2. Step 2: Convert to fraction form
    554,509.72/831,664.38 = 155,051.80/x
  3. Step 3: Cross multiply
    554,509.72x = 831,664.38 × 155,051.80
  4. Step 4: Simplify right side
    554,509.72x = 128,951,059,114.88
  5. Step 5: Solve for x
    x = 128,951,059,114.88/554,509.72
  6. Step 6: Final answer
    x = 232,549.68

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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.