Home / 638,973.58-958,100.73-212,280.97

Finding the Fourth Proportional to 638,973.58, 958,100.73 and 212,280.97

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Solution

The fourth proportional to 638,973.58, 958,100.73 and 212,280.97 is: 318,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,973.58 : 958,100.73 = 212,280.97 : x
  2. Step 2: Convert to fraction form
    638,973.58/958,100.73 = 212,280.97/x
  3. Step 3: Cross multiply
    638,973.58x = 958,100.73 × 212,280.97
  4. Step 4: Simplify right side
    638,973.58x = 203,386,552,322.11
  5. Step 5: Solve for x
    x = 203,386,552,322.11/638,973.58
  6. Step 6: Final answer
    x = 318,301.97

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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.