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Finding the Fourth Proportional to 279,012.56, 385,041.24 and 151,688.24

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Solution

The fourth proportional to 279,012.56, 385,041.24 and 151,688.24 is: 209,331.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,012.56 : 385,041.24 = 151,688.24 : x
  2. Step 2: Convert to fraction form
    279,012.56/385,041.24 = 151,688.24/x
  3. Step 3: Cross multiply
    279,012.56x = 385,041.24 × 151,688.24
  4. Step 4: Simplify right side
    279,012.56x = 58,406,228,023.02
  5. Step 5: Solve for x
    x = 58,406,228,023.02/279,012.56
  6. Step 6: Final answer
    x = 209,331.90

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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.