Home / 280,502.06-387,126.06-157,998.47

Finding the Fourth Proportional to 280,502.06, 387,126.06 and 157,998.47

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Solution

The fourth proportional to 280,502.06, 387,126.06 and 157,998.47 is: 218,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,502.06 : 387,126.06 = 157,998.47 : x
  2. Step 2: Convert to fraction form
    280,502.06/387,126.06 = 157,998.47/x
  3. Step 3: Cross multiply
    280,502.06x = 387,126.06 × 157,998.47
  4. Step 4: Simplify right side
    280,502.06x = 61,165,323,241.50
  5. Step 5: Solve for x
    x = 61,165,323,241.50/280,502.06
  6. Step 6: Final answer
    x = 218,056.60

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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.