Home / 390,935.64-539,492.22-212,087.64

Finding the Fourth Proportional to 390,935.64, 539,492.22 and 212,087.64

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Solution

The fourth proportional to 390,935.64, 539,492.22 and 212,087.64 is: 292,681.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,935.64 : 539,492.22 = 212,087.64 : x
  2. Step 2: Convert to fraction form
    390,935.64/539,492.22 = 212,087.64/x
  3. Step 3: Cross multiply
    390,935.64x = 539,492.22 × 212,087.64
  4. Step 4: Simplify right side
    390,935.64x = 114,419,631,738.16
  5. Step 5: Solve for x
    x = 114,419,631,738.16/390,935.64
  6. Step 6: Final answer
    x = 292,681.51

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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.