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Finding the Fourth Proportional to 279,756.16, 386,058.64 and 152,432.80

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Solution

The fourth proportional to 279,756.16, 386,058.64 and 152,432.80 is: 210,354.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,756.16 : 386,058.64 = 152,432.80 : x
  2. Step 2: Convert to fraction form
    279,756.16/386,058.64 = 152,432.80/x
  3. Step 3: Cross multiply
    279,756.16x = 386,058.64 × 152,432.80
  4. Step 4: Simplify right side
    279,756.16x = 58,847,999,459.39
  5. Step 5: Solve for x
    x = 58,847,999,459.39/279,756.16
  6. Step 6: Final answer
    x = 210,354.62

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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.