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Finding the Fourth Proportional to 255,931.20, 383,896.80 and 171,950.40

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Solution

The fourth proportional to 255,931.20, 383,896.80 and 171,950.40 is: 257,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,931.20 : 383,896.80 = 171,950.40 : x
  2. Step 2: Convert to fraction form
    255,931.20/383,896.80 = 171,950.40/x
  3. Step 3: Cross multiply
    255,931.20x = 383,896.80 × 171,950.40
  4. Step 4: Simplify right side
    255,931.20x = 66,011,208,318.72
  5. Step 5: Solve for x
    x = 66,011,208,318.72/255,931.20
  6. Step 6: Final answer
    x = 257,925.60

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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.