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Finding the Fourth Proportional to 279,335.84, 385,483.20 and 152,011.20

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Solution

The fourth proportional to 279,335.84, 385,483.20 and 152,011.20 is: 209,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,335.84 : 385,483.20 = 152,011.20 : x
  2. Step 2: Convert to fraction form
    279,335.84/385,483.20 = 152,011.20/x
  3. Step 3: Cross multiply
    279,335.84x = 385,483.20 × 152,011.20
  4. Step 4: Simplify right side
    279,335.84x = 58,597,763,811.84
  5. Step 5: Solve for x
    x = 58,597,763,811.84/279,335.84
  6. Step 6: Final answer
    x = 209,775.31

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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.