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Finding the Fourth Proportional to 255,423.60, 383,135.40 and 97,657.20

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Solution

The fourth proportional to 255,423.60, 383,135.40 and 97,657.20 is: 146,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,423.60 : 383,135.40 = 97,657.20 : x
  2. Step 2: Convert to fraction form
    255,423.60/383,135.40 = 97,657.20/x
  3. Step 3: Cross multiply
    255,423.60x = 383,135.40 × 97,657.20
  4. Step 4: Simplify right side
    255,423.60x = 37,415,930,384.88
  5. Step 5: Solve for x
    x = 37,415,930,384.88/255,423.60
  6. Step 6: Final answer
    x = 146,485.80

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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.