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Finding the Fourth Proportional to 389,334.60, 584,001.90 and 239,087.70

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Solution

The fourth proportional to 389,334.60, 584,001.90 and 239,087.70 is: 358,631.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,334.60 : 584,001.90 = 239,087.70 : x
  2. Step 2: Convert to fraction form
    389,334.60/584,001.90 = 239,087.70/x
  3. Step 3: Cross multiply
    389,334.60x = 584,001.90 × 239,087.70
  4. Step 4: Simplify right side
    389,334.60x = 139,627,671,066.63
  5. Step 5: Solve for x
    x = 139,627,671,066.63/389,334.60
  6. Step 6: Final answer
    x = 358,631.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.