Home / 388,530.05-581,718.95-198,581.36

Finding the Fourth Proportional to 388,530.05, 581,718.95 and 198,581.36

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Solution

The fourth proportional to 388,530.05, 581,718.95 and 198,581.36 is: 297,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530.05 : 581,718.95 = 198,581.36 : x
  2. Step 2: Convert to fraction form
    388,530.05/581,718.95 = 198,581.36/x
  3. Step 3: Cross multiply
    388,530.05x = 581,718.95 × 198,581.36
  4. Step 4: Simplify right side
    388,530.05x = 115,518,537,071.95
  5. Step 5: Solve for x
    x = 115,518,537,071.95/388,530.05
  6. Step 6: Final answer
    x = 297,322.02

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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.