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Finding the Fourth Proportional to 279,999.48, 386,398.36 and 152,674.76

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Solution

The fourth proportional to 279,999.48, 386,398.36 and 152,674.76 is: 210,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,999.48 : 386,398.36 = 152,674.76 : x
  2. Step 2: Convert to fraction form
    279,999.48/386,398.36 = 152,674.76/x
  3. Step 3: Cross multiply
    279,999.48x = 386,398.36 × 152,674.76
  4. Step 4: Simplify right side
    279,999.48x = 58,993,276,877.39
  5. Step 5: Solve for x
    x = 58,993,276,877.39/279,999.48
  6. Step 6: Final answer
    x = 210,690.67

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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.