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Finding the Fourth Proportional to 316,361.68, 437,053.32 and 207,723.76

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Solution

The fourth proportional to 316,361.68, 437,053.32 and 207,723.76 is: 286,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,361.68 : 437,053.32 = 207,723.76 : x
  2. Step 2: Convert to fraction form
    316,361.68/437,053.32 = 207,723.76/x
  3. Step 3: Cross multiply
    316,361.68x = 437,053.32 × 207,723.76
  4. Step 4: Simplify right side
    316,361.68x = 90,786,358,950.88
  5. Step 5: Solve for x
    x = 90,786,358,950.88/316,361.68
  6. Step 6: Final answer
    x = 286,970.15

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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.