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Finding the Fourth Proportional to 295,718.15, 407,666.13 and 210,687.59

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Solution

The fourth proportional to 295,718.15, 407,666.13 and 210,687.59 is: 290,446.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,718.15 : 407,666.13 = 210,687.59 : x
  2. Step 2: Convert to fraction form
    295,718.15/407,666.13 = 210,687.59/x
  3. Step 3: Cross multiply
    295,718.15x = 407,666.13 × 210,687.59
  4. Step 4: Simplify right side
    295,718.15x = 85,890,192,416.00
  5. Step 5: Solve for x
    x = 85,890,192,416.00/295,718.15
  6. Step 6: Final answer
    x = 290,446.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.