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Finding the Fourth Proportional to 279,035.60, 385,058.60 and 151,706.80

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Solution

The fourth proportional to 279,035.60, 385,058.60 and 151,706.80 is: 209,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,035.60 : 385,058.60 = 151,706.80 : x
  2. Step 2: Convert to fraction form
    279,035.60/385,058.60 = 151,706.80/x
  3. Step 3: Cross multiply
    279,035.60x = 385,058.60 × 151,706.80
  4. Step 4: Simplify right side
    279,035.60x = 58,416,008,018.48
  5. Step 5: Solve for x
    x = 58,416,008,018.48/279,035.60
  6. Step 6: Final answer
    x = 209,349.66

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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.