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Finding the Fourth Proportional to 257,291.35, 355,235.33 and 160,642.35

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Solution

The fourth proportional to 257,291.35, 355,235.33 and 160,642.35 is: 221,794.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,291.35 : 355,235.33 = 160,642.35 : x
  2. Step 2: Convert to fraction form
    257,291.35/355,235.33 = 160,642.35/x
  3. Step 3: Cross multiply
    257,291.35x = 355,235.33 × 160,642.35
  4. Step 4: Simplify right side
    257,291.35x = 57,065,838,214.23
  5. Step 5: Solve for x
    x = 57,065,838,214.23/257,291.35
  6. Step 6: Final answer
    x = 221,794.62

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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.