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Finding the Fourth Proportional to 279,336.84, 385,484.58 and 152,012.20

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Solution

The fourth proportional to 279,336.84, 385,484.58 and 152,012.20 is: 209,776.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,336.84 : 385,484.58 = 152,012.20 : x
  2. Step 2: Convert to fraction form
    279,336.84/385,484.58 = 152,012.20/x
  3. Step 3: Cross multiply
    279,336.84x = 385,484.58 × 152,012.20
  4. Step 4: Simplify right side
    279,336.84x = 58,598,359,071.88
  5. Step 5: Solve for x
    x = 58,598,359,071.88/279,336.84
  6. Step 6: Final answer
    x = 209,776.69

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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.