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Finding the Fourth Proportional to 402,969.52, 556,471.38 and 259,975.36

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Solution

The fourth proportional to 402,969.52, 556,471.38 and 259,975.36 is: 359,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,969.52 : 556,471.38 = 259,975.36 : x
  2. Step 2: Convert to fraction form
    402,969.52/556,471.38 = 259,975.36/x
  3. Step 3: Cross multiply
    402,969.52x = 556,471.38 × 259,975.36
  4. Step 4: Simplify right side
    402,969.52x = 144,668,847,345.20
  5. Step 5: Solve for x
    x = 144,668,847,345.20/402,969.52
  6. Step 6: Final answer
    x = 359,006.92

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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.