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Finding the Fourth Proportional to 256,811.10, 358,835.70 and 256,811.10

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Solution

The fourth proportional to 256,811.10, 358,835.70 and 256,811.10 is: 358,835.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,811.10 : 358,835.70 = 256,811.10 : x
  2. Step 2: Convert to fraction form
    256,811.10/358,835.70 = 256,811.10/x
  3. Step 3: Cross multiply
    256,811.10x = 358,835.70 × 256,811.10
  4. Step 4: Simplify right side
    256,811.10x = 92,152,990,836.27
  5. Step 5: Solve for x
    x = 92,152,990,836.27/256,811.10
  6. Step 6: Final answer
    x = 358,835.70

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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.