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Finding the Fourth Proportional to 638,756.84, 958,097.45 and 239,364.20

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Solution

The fourth proportional to 638,756.84, 958,097.45 and 239,364.20 is: 359,032.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,756.84 : 958,097.45 = 239,364.20 : x
  2. Step 2: Convert to fraction form
    638,756.84/958,097.45 = 239,364.20/x
  3. Step 3: Cross multiply
    638,756.84x = 958,097.45 × 239,364.20
  4. Step 4: Simplify right side
    638,756.84x = 229,334,223,653.98
  5. Step 5: Solve for x
    x = 229,334,223,653.98/638,756.84
  6. Step 6: Final answer
    x = 359,032.12

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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.