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Finding the Fourth Proportional to 452,235.40, 678,353.10 and 136,913.80

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Solution

The fourth proportional to 452,235.40, 678,353.10 and 136,913.80 is: 205,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,235.40 : 678,353.10 = 136,913.80 : x
  2. Step 2: Convert to fraction form
    452,235.40/678,353.10 = 136,913.80/x
  3. Step 3: Cross multiply
    452,235.40x = 678,353.10 × 136,913.80
  4. Step 4: Simplify right side
    452,235.40x = 92,875,900,662.78
  5. Step 5: Solve for x
    x = 92,875,900,662.78/452,235.40
  6. Step 6: Final answer
    x = 205,370.70

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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.