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Finding the Fourth Proportional to 642,846.15, 964,278.72 and 243,379.71

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Solution

The fourth proportional to 642,846.15, 964,278.72 and 243,379.71 is: 365,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,846.15 : 964,278.72 = 243,379.71 : x
  2. Step 2: Convert to fraction form
    642,846.15/964,278.72 = 243,379.71/x
  3. Step 3: Cross multiply
    642,846.15x = 964,278.72 × 243,379.71
  4. Step 4: Simplify right side
    642,846.15x = 234,685,875,232.77
  5. Step 5: Solve for x
    x = 234,685,875,232.77/642,846.15
  6. Step 6: Final answer
    x = 365,073.16

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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.