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Finding the Fourth Proportional to 172,280.90, 257,838.15 and 151,285.70

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Solution

The fourth proportional to 172,280.90, 257,838.15 and 151,285.70 is: 226,416.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,280.90 : 257,838.15 = 151,285.70 : x
  2. Step 2: Convert to fraction form
    172,280.90/257,838.15 = 151,285.70/x
  3. Step 3: Cross multiply
    172,280.90x = 257,838.15 × 151,285.70
  4. Step 4: Simplify right side
    172,280.90x = 39,007,225,009.46
  5. Step 5: Solve for x
    x = 39,007,225,009.46/172,280.90
  6. Step 6: Final answer
    x = 226,416.42

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1.5x scale

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.