Home / 317,029.43-437,640.23-221,909.51

Finding the Fourth Proportional to 317,029.43, 437,640.23 and 221,909.51

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Solution

The fourth proportional to 317,029.43, 437,640.23 and 221,909.51 is: 306,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,029.43 : 437,640.23 = 221,909.51 : x
  2. Step 2: Convert to fraction form
    317,029.43/437,640.23 = 221,909.51/x
  3. Step 3: Cross multiply
    317,029.43x = 437,640.23 × 221,909.51
  4. Step 4: Simplify right side
    317,029.43x = 97,116,528,995.59
  5. Step 5: Solve for x
    x = 97,116,528,995.59/317,029.43
  6. Step 6: Final answer
    x = 306,332.85

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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.