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Finding the Fourth Proportional to 308,893.50, 426,280.14 and 172,924.02

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Solution

The fourth proportional to 308,893.50, 426,280.14 and 172,924.02 is: 238,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,893.50 : 426,280.14 = 172,924.02 : x
  2. Step 2: Convert to fraction form
    308,893.50/426,280.14 = 172,924.02/x
  3. Step 3: Cross multiply
    308,893.50x = 426,280.14 × 172,924.02
  4. Step 4: Simplify right side
    308,893.50x = 73,714,075,454.96
  5. Step 5: Solve for x
    x = 73,714,075,454.96/308,893.50
  6. Step 6: Final answer
    x = 238,639.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.