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Finding the Fourth Proportional to 280,565.56, 386,365 and 243,754.76

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Solution

The fourth proportional to 280,565.56, 386,365 and 243,754.76 is: 335,673.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,565.56 : 386,365 = 243,754.76 : x
  2. Step 2: Convert to fraction form
    280,565.56/386,365 = 243,754.76/x
  3. Step 3: Cross multiply
    280,565.56x = 386,365 × 243,754.76
  4. Step 4: Simplify right side
    280,565.56x = 94,178,305,915.58
  5. Step 5: Solve for x
    x = 94,178,305,915.58/280,565.56
  6. Step 6: Final answer
    x = 335,673.08

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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.