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Finding the Fourth Proportional to 372,894.64, 514,591.96 and 203,128.76

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Solution

The fourth proportional to 372,894.64, 514,591.96 and 203,128.76 is: 280,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,894.64 : 514,591.96 = 203,128.76 : x
  2. Step 2: Convert to fraction form
    372,894.64/514,591.96 = 203,128.76/x
  3. Step 3: Cross multiply
    372,894.64x = 514,591.96 × 203,128.76
  4. Step 4: Simplify right side
    372,894.64x = 104,528,426,740.77
  5. Step 5: Solve for x
    x = 104,528,426,740.77/372,894.64
  6. Step 6: Final answer
    x = 280,316.25

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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.