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Finding the Fourth Proportional to 279,036.10, 385,059.29 and 151,707.30

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Solution

The fourth proportional to 279,036.10, 385,059.29 and 151,707.30 is: 209,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,036.10 : 385,059.29 = 151,707.30 : x
  2. Step 2: Convert to fraction form
    279,036.10/385,059.29 = 151,707.30/x
  3. Step 3: Cross multiply
    279,036.10x = 385,059.29 × 151,707.30
  4. Step 4: Simplify right side
    279,036.10x = 58,416,305,225.82
  5. Step 5: Solve for x
    x = 58,416,305,225.82/279,036.10
  6. Step 6: Final answer
    x = 209,350.35

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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.