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Finding the Fourth Proportional to 287,335.60, 429,982.80 and 250,302.40

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Solution

The fourth proportional to 287,335.60, 429,982.80 and 250,302.40 is: 374,564.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,335.60 : 429,982.80 = 250,302.40 : x
  2. Step 2: Convert to fraction form
    287,335.60/429,982.80 = 250,302.40/x
  3. Step 3: Cross multiply
    287,335.60x = 429,982.80 × 250,302.40
  4. Step 4: Simplify right side
    287,335.60x = 107,625,726,798.72
  5. Step 5: Solve for x
    x = 107,625,726,798.72/287,335.60
  6. Step 6: Final answer
    x = 374,564.54

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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.