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Finding the Fourth Proportional to 554,381.91, 831,445.74 and 155,050.92

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Solution

The fourth proportional to 554,381.91, 831,445.74 and 155,050.92 is: 232,540.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,381.91 : 831,445.74 = 155,050.92 : x
  2. Step 2: Convert to fraction form
    554,381.91/831,445.74 = 155,050.92/x
  3. Step 3: Cross multiply
    554,381.91x = 831,445.74 × 155,050.92
  4. Step 4: Simplify right side
    554,381.91x = 128,916,426,917.08
  5. Step 5: Solve for x
    x = 128,916,426,917.08/554,381.91
  6. Step 6: Final answer
    x = 232,540.83

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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.