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Finding the Fourth Proportional to 372,852.72, 514,558.71 and 280,809.63

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Solution

The fourth proportional to 372,852.72, 514,558.71 and 280,809.63 is: 387,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,852.72 : 514,558.71 = 280,809.63 : x
  2. Step 2: Convert to fraction form
    372,852.72/514,558.71 = 280,809.63/x
  3. Step 3: Cross multiply
    372,852.72x = 514,558.71 × 280,809.63
  4. Step 4: Simplify right side
    372,852.72x = 144,493,040,968.38
  5. Step 5: Solve for x
    x = 144,493,040,968.38/372,852.72
  6. Step 6: Final answer
    x = 387,533.83

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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.