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Finding the Fourth Proportional to 279,624.90, 385,889.88 and 152,308.68

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Solution

The fourth proportional to 279,624.90, 385,889.88 and 152,308.68 is: 210,190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,624.90 : 385,889.88 = 152,308.68 : x
  2. Step 2: Convert to fraction form
    279,624.90/385,889.88 = 152,308.68/x
  3. Step 3: Cross multiply
    279,624.90x = 385,889.88 × 152,308.68
  4. Step 4: Simplify right side
    279,624.90x = 58,774,378,248.16
  5. Step 5: Solve for x
    x = 58,774,378,248.16/279,624.90
  6. Step 6: Final answer
    x = 210,190.07

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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.