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Finding the Fourth Proportional to 293,205.20, 439,807.80 and 266,086.40

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Solution

The fourth proportional to 293,205.20, 439,807.80 and 266,086.40 is: 399,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,205.20 : 439,807.80 = 266,086.40 : x
  2. Step 2: Convert to fraction form
    293,205.20/439,807.80 = 266,086.40/x
  3. Step 3: Cross multiply
    293,205.20x = 439,807.80 × 266,086.40
  4. Step 4: Simplify right side
    293,205.20x = 117,026,874,193.92
  5. Step 5: Solve for x
    x = 117,026,874,193.92/293,205.20
  6. Step 6: Final answer
    x = 399,129.60

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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.