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Finding the Fourth Proportional to 305,624.62, 458,615.40 and 128,117.98

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Solution

The fourth proportional to 305,624.62, 458,615.40 and 128,117.98 is: 192,251.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,624.62 : 458,615.40 = 128,117.98 : x
  2. Step 2: Convert to fraction form
    305,624.62/458,615.40 = 128,117.98/x
  3. Step 3: Cross multiply
    305,624.62x = 458,615.40 × 128,117.98
  4. Step 4: Simplify right side
    305,624.62x = 58,756,878,644.89
  5. Step 5: Solve for x
    x = 58,756,878,644.89/305,624.62
  6. Step 6: Final answer
    x = 192,251.78

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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.