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Finding the Fourth Proportional to 305,303.51, 420,832.04 and 240,667.35

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Solution

The fourth proportional to 305,303.51, 420,832.04 and 240,667.35 is: 331,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,303.51 : 420,832.04 = 240,667.35 : x
  2. Step 2: Convert to fraction form
    305,303.51/420,832.04 = 240,667.35/x
  3. Step 3: Cross multiply
    305,303.51x = 420,832.04 × 240,667.35
  4. Step 4: Simplify right side
    305,303.51x = 101,280,530,658.56
  5. Step 5: Solve for x
    x = 101,280,530,658.56/305,303.51
  6. Step 6: Final answer
    x = 331,737.20

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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.