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Finding the Fourth Proportional to 145,202.40, 217,760.40 and 56,404.80

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Solution

The fourth proportional to 145,202.40, 217,760.40 and 56,404.80 is: 84,590.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,202.40 : 217,760.40 = 56,404.80 : x
  2. Step 2: Convert to fraction form
    145,202.40/217,760.40 = 56,404.80/x
  3. Step 3: Cross multiply
    145,202.40x = 217,760.40 × 56,404.80
  4. Step 4: Simplify right side
    145,202.40x = 12,282,731,809.92
  5. Step 5: Solve for x
    x = 12,282,731,809.92/145,202.40
  6. Step 6: Final answer
    x = 84,590.42

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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.