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Finding the Fourth Proportional to 279,673.48, 385,947.42 and 152,349.07

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Solution

The fourth proportional to 279,673.48, 385,947.42 and 152,349.07 is: 210,240.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,673.48 : 385,947.42 = 152,349.07 : x
  2. Step 2: Convert to fraction form
    279,673.48/385,947.42 = 152,349.07/x
  3. Step 3: Cross multiply
    279,673.48x = 385,947.42 × 152,349.07
  4. Step 4: Simplify right side
    279,673.48x = 58,798,730,505.90
  5. Step 5: Solve for x
    x = 58,798,730,505.90/279,673.48
  6. Step 6: Final answer
    x = 210,240.64

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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.