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Finding the Fourth Proportional to 279,031.36, 385,061.40 and 151,706.96

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Solution

The fourth proportional to 279,031.36, 385,061.40 and 151,706.96 is: 209,354.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,031.36 : 385,061.40 = 151,706.96 : x
  2. Step 2: Convert to fraction form
    279,031.36/385,061.40 = 151,706.96/x
  3. Step 3: Cross multiply
    279,031.36x = 385,061.40 × 151,706.96
  4. Step 4: Simplify right side
    279,031.36x = 58,416,494,407.34
  5. Step 5: Solve for x
    x = 58,416,494,407.34/279,031.36
  6. Step 6: Final answer
    x = 209,354.58

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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.