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Finding the Fourth Proportional to 648,138.40, 971,746.80 and 248,624.80

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Solution

The fourth proportional to 648,138.40, 971,746.80 and 248,624.80 is: 372,760.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,138.40 : 971,746.80 = 248,624.80 : x
  2. Step 2: Convert to fraction form
    648,138.40/971,746.80 = 248,624.80/x
  3. Step 3: Cross multiply
    648,138.40x = 971,746.80 × 248,624.80
  4. Step 4: Simplify right side
    648,138.40x = 241,600,353,800.64
  5. Step 5: Solve for x
    x = 241,600,353,800.64/648,138.40
  6. Step 6: Final answer
    x = 372,760.44

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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.