Home / 217,418,681.52-325,716,530.94-128,521,106.46

Finding the Fourth Proportional to 217,418,681.52, 325,716,530.94 and 128,521,106.46

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Solution

The fourth proportional to 217,418,681.52, 325,716,530.94 and 128,521,106.46 is: 192,538,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,418,681.52 : 325,716,530.94 = 128,521,106.46 : x
  2. Step 2: Convert to fraction form
    217,418,681.52/325,716,530.94 = 128,521,106.46/x
  3. Step 3: Cross multiply
    217,418,681.52x = 325,716,530.94 × 128,521,106.46
  4. Step 4: Simplify right side
    217,418,681.52x = 41,861,448,948,721,624
  5. Step 5: Solve for x
    x = 41,861,448,948,721,624/217,418,681.52
  6. Step 6: Final answer
    x = 192,538,417.84

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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.