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Finding the Fourth Proportional to 203,280.95, 280,527.44 and 112,642.79

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Solution

The fourth proportional to 203,280.95, 280,527.44 and 112,642.79 is: 155,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,280.95 : 280,527.44 = 112,642.79 : x
  2. Step 2: Convert to fraction form
    203,280.95/280,527.44 = 112,642.79/x
  3. Step 3: Cross multiply
    203,280.95x = 280,527.44 × 112,642.79
  4. Step 4: Simplify right side
    203,280.95x = 31,599,391,547.31
  5. Step 5: Solve for x
    x = 31,599,391,547.31/203,280.95
  6. Step 6: Final answer
    x = 155,446.89

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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.