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Finding the Fourth Proportional to 256,515,400.80, 358,668,064.80 and 256,515,400.80

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Solution

The fourth proportional to 256,515,400.80, 358,668,064.80 and 256,515,400.80 is: 358,668,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,515,400.80 : 358,668,064.80 = 256,515,400.80 : x
  2. Step 2: Convert to fraction form
    256,515,400.80/358,668,064.80 = 256,515,400.80/x
  3. Step 3: Cross multiply
    256,515,400.80x = 358,668,064.80 × 256,515,400.80
  4. Step 4: Simplify right side
    256,515,400.80x = 92,003,882,396,332,384
  5. Step 5: Solve for x
    x = 92,003,882,396,332,384/256,515,400.80
  6. Step 6: Final answer
    x = 358,668,064.80

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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.