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Finding the Fourth Proportional to 493,437.80, 739,983.90 and 256,701.80

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Solution

The fourth proportional to 493,437.80, 739,983.90 and 256,701.80 is: 384,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,437.80 : 739,983.90 = 256,701.80 : x
  2. Step 2: Convert to fraction form
    493,437.80/739,983.90 = 256,701.80/x
  3. Step 3: Cross multiply
    493,437.80x = 739,983.90 × 256,701.80
  4. Step 4: Simplify right side
    493,437.80x = 189,955,199,101.02
  5. Step 5: Solve for x
    x = 189,955,199,101.02/493,437.80
  6. Step 6: Final answer
    x = 384,962.80

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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.