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Finding the Fourth Proportional to 287,483.80, 432,003.30 and 253,269.40

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Solution

The fourth proportional to 287,483.80, 432,003.30 and 253,269.40 is: 380,589.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,483.80 : 432,003.30 = 253,269.40 : x
  2. Step 2: Convert to fraction form
    287,483.80/432,003.30 = 253,269.40/x
  3. Step 3: Cross multiply
    287,483.80x = 432,003.30 × 253,269.40
  4. Step 4: Simplify right side
    287,483.80x = 109,413,216,589.02
  5. Step 5: Solve for x
    x = 109,413,216,589.02/287,483.80
  6. Step 6: Final answer
    x = 380,589.16

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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.