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Finding the Fourth Proportional to 519,113.68, 778,671.24 and 145,136.32

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Solution

The fourth proportional to 519,113.68, 778,671.24 and 145,136.32 is: 217,704.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,113.68 : 778,671.24 = 145,136.32 : x
  2. Step 2: Convert to fraction form
    519,113.68/778,671.24 = 145,136.32/x
  3. Step 3: Cross multiply
    519,113.68x = 778,671.24 × 145,136.32
  4. Step 4: Simplify right side
    519,113.68x = 113,013,478,263.44
  5. Step 5: Solve for x
    x = 113,013,478,263.44/519,113.68
  6. Step 6: Final answer
    x = 217,704.68

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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.