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Finding the Fourth Proportional to 402,491.46, 555,426.47 and 230,403.72

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Solution

The fourth proportional to 402,491.46, 555,426.47 and 230,403.72 is: 317,950.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,491.46 : 555,426.47 = 230,403.72 : x
  2. Step 2: Convert to fraction form
    402,491.46/555,426.47 = 230,403.72/x
  3. Step 3: Cross multiply
    402,491.46x = 555,426.47 × 230,403.72
  4. Step 4: Simplify right side
    402,491.46x = 127,972,321,550.90
  5. Step 5: Solve for x
    x = 127,972,321,550.90/402,491.46
  6. Step 6: Final answer
    x = 317,950.41

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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.