Home / 317,069.49-438,135.78-230,878.77

Finding the Fourth Proportional to 317,069.49, 438,135.78 and 230,878.77

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Solution

The fourth proportional to 317,069.49, 438,135.78 and 230,878.77 is: 319,034.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,069.49 : 438,135.78 = 230,878.77 : x
  2. Step 2: Convert to fraction form
    317,069.49/438,135.78 = 230,878.77/x
  3. Step 3: Cross multiply
    317,069.49x = 438,135.78 × 230,878.77
  4. Step 4: Simplify right side
    317,069.49x = 101,156,249,979.39
  5. Step 5: Solve for x
    x = 101,156,249,979.39/317,069.49
  6. Step 6: Final answer
    x = 319,034.95

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1.5x scale

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.