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Finding the Fourth Proportional to 287,349.73, 430,360.29 and 277,385.21

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Solution

The fourth proportional to 287,349.73, 430,360.29 and 277,385.21 is: 415,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,349.73 : 430,360.29 = 277,385.21 : x
  2. Step 2: Convert to fraction form
    287,349.73/430,360.29 = 277,385.21/x
  3. Step 3: Cross multiply
    287,349.73x = 430,360.29 × 277,385.21
  4. Step 4: Simplify right side
    287,349.73x = 119,375,578,030.39
  5. Step 5: Solve for x
    x = 119,375,578,030.39/287,349.73
  6. Step 6: Final answer
    x = 415,436.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.