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Finding the Fourth Proportional to 385,931.70, 541,091.70 and 385,931.70

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Solution

The fourth proportional to 385,931.70, 541,091.70 and 385,931.70 is: 541,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,931.70 : 541,091.70 = 385,931.70 : x
  2. Step 2: Convert to fraction form
    385,931.70/541,091.70 = 385,931.70/x
  3. Step 3: Cross multiply
    385,931.70x = 541,091.70 × 385,931.70
  4. Step 4: Simplify right side
    385,931.70x = 208,824,439,636.89
  5. Step 5: Solve for x
    x = 208,824,439,636.89/385,931.70
  6. Step 6: Final answer
    x = 541,091.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.