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Finding the Fourth Proportional to 402,534.71, 555,550.46 and 259,710.25

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Solution

The fourth proportional to 402,534.71, 555,550.46 and 259,710.25 is: 358,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,534.71 : 555,550.46 = 259,710.25 : x
  2. Step 2: Convert to fraction form
    402,534.71/555,550.46 = 259,710.25/x
  3. Step 3: Cross multiply
    402,534.71x = 555,550.46 × 259,710.25
  4. Step 4: Simplify right side
    402,534.71x = 144,282,147,140.70
  5. Step 5: Solve for x
    x = 144,282,147,140.70/402,534.71
  6. Step 6: Final answer
    x = 358,434.05

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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.