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Finding the Fourth Proportional to 285,293.20, 427,939.80 and 266,630.80

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Solution

The fourth proportional to 285,293.20, 427,939.80 and 266,630.80 is: 399,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,293.20 : 427,939.80 = 266,630.80 : x
  2. Step 2: Convert to fraction form
    285,293.20/427,939.80 = 266,630.80/x
  3. Step 3: Cross multiply
    285,293.20x = 427,939.80 × 266,630.80
  4. Step 4: Simplify right side
    285,293.20x = 114,101,931,225.84
  5. Step 5: Solve for x
    x = 114,101,931,225.84/285,293.20
  6. Step 6: Final answer
    x = 399,946.20

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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.