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Finding the Fourth Proportional to 521,303.62, 719,185.17 and 317,190.91

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Solution

The fourth proportional to 521,303.62, 719,185.17 and 317,190.91 is: 437,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,303.62 : 719,185.17 = 317,190.91 : x
  2. Step 2: Convert to fraction form
    521,303.62/719,185.17 = 317,190.91/x
  3. Step 3: Cross multiply
    521,303.62x = 719,185.17 × 317,190.91
  4. Step 4: Simplify right side
    521,303.62x = 228,118,998,530.81
  5. Step 5: Solve for x
    x = 228,118,998,530.81/521,303.62
  6. Step 6: Final answer
    x = 437,593.35

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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.