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Finding the Fourth Proportional to 280,502.96, 387,308.76 and 185,145.20

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Solution

The fourth proportional to 280,502.96, 387,308.76 and 185,145.20 is: 255,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,502.96 : 387,308.76 = 185,145.20 : x
  2. Step 2: Convert to fraction form
    280,502.96/387,308.76 = 185,145.20/x
  3. Step 3: Cross multiply
    280,502.96x = 387,308.76 × 185,145.20
  4. Step 4: Simplify right side
    280,502.96x = 71,708,357,831.95
  5. Step 5: Solve for x
    x = 71,708,357,831.95/280,502.96
  6. Step 6: Final answer
    x = 255,642.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.