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Finding the Fourth Proportional to 255,812.40, 384,064.20 and 162,500.40

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Solution

The fourth proportional to 255,812.40, 384,064.20 and 162,500.40 is: 243,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,812.40 : 384,064.20 = 162,500.40 : x
  2. Step 2: Convert to fraction form
    255,812.40/384,064.20 = 162,500.40/x
  3. Step 3: Cross multiply
    255,812.40x = 384,064.20 × 162,500.40
  4. Step 4: Simplify right side
    255,812.40x = 62,410,586,125.68
  5. Step 5: Solve for x
    x = 62,410,586,125.68/255,812.40
  6. Step 6: Final answer
    x = 243,970.14

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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.