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Finding the Fourth Proportional to 287,246.10, 430,869.15 and 262,362.90

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Solution

The fourth proportional to 287,246.10, 430,869.15 and 262,362.90 is: 393,544.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,246.10 : 430,869.15 = 262,362.90 : x
  2. Step 2: Convert to fraction form
    287,246.10/430,869.15 = 262,362.90/x
  3. Step 3: Cross multiply
    287,246.10x = 430,869.15 × 262,362.90
  4. Step 4: Simplify right side
    287,246.10x = 113,044,079,714.54
  5. Step 5: Solve for x
    x = 113,044,079,714.54/287,246.10
  6. Step 6: Final answer
    x = 393,544.35

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1.5x scale

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.