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Finding the Fourth Proportional to 402,601.38, 555,642.27 and 259,776.90

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Solution

The fourth proportional to 402,601.38, 555,642.27 and 259,776.90 is: 358,525.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,601.38 : 555,642.27 = 259,776.90 : x
  2. Step 2: Convert to fraction form
    402,601.38/555,642.27 = 259,776.90/x
  3. Step 3: Cross multiply
    402,601.38x = 555,642.27 × 259,776.90
  4. Step 4: Simplify right side
    402,601.38x = 144,343,026,409.56
  5. Step 5: Solve for x
    x = 144,343,026,409.56/402,601.38
  6. Step 6: Final answer
    x = 358,525.91

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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.