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Finding the Fourth Proportional to 381,488.49, 526,495.25 and 243,792.92

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Solution

The fourth proportional to 381,488.49, 526,495.25 and 243,792.92 is: 336,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,488.49 : 526,495.25 = 243,792.92 : x
  2. Step 2: Convert to fraction form
    381,488.49/526,495.25 = 243,792.92/x
  3. Step 3: Cross multiply
    381,488.49x = 526,495.25 × 243,792.92
  4. Step 4: Simplify right side
    381,488.49x = 128,355,816,289.35
  5. Step 5: Solve for x
    x = 128,355,816,289.35/381,488.49
  6. Step 6: Final answer
    x = 336,460.52

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.