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Finding the Fourth Proportional to 145,277.40, 217,872.90 and 56,479.80

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Solution

The fourth proportional to 145,277.40, 217,872.90 and 56,479.80 is: 84,702.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,277.40 : 217,872.90 = 56,479.80 : x
  2. Step 2: Convert to fraction form
    145,277.40/217,872.90 = 56,479.80/x
  3. Step 3: Cross multiply
    145,277.40x = 217,872.90 × 56,479.80
  4. Step 4: Simplify right side
    145,277.40x = 12,305,417,817.42
  5. Step 5: Solve for x
    x = 12,305,417,817.42/145,277.40
  6. Step 6: Final answer
    x = 84,702.91

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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.