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Finding the Fourth Proportional to 287,800.74, 429,569.61 and 270,071.46

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Solution

The fourth proportional to 287,800.74, 429,569.61 and 270,071.46 is: 403,107.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,800.74 : 429,569.61 = 270,071.46 : x
  2. Step 2: Convert to fraction form
    287,800.74/429,569.61 = 270,071.46/x
  3. Step 3: Cross multiply
    287,800.74x = 429,569.61 × 270,071.46
  4. Step 4: Simplify right side
    287,800.74x = 116,014,491,744.33
  5. Step 5: Solve for x
    x = 116,014,491,744.33/287,800.74
  6. Step 6: Final answer
    x = 403,107.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.