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Finding the Fourth Proportional to 257,466.72, 355,303.52 and 156,864.80

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Solution

The fourth proportional to 257,466.72, 355,303.52 and 156,864.80 is: 216,473.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,466.72 : 355,303.52 = 156,864.80 : x
  2. Step 2: Convert to fraction form
    257,466.72/355,303.52 = 156,864.80/x
  3. Step 3: Cross multiply
    257,466.72x = 355,303.52 × 156,864.80
  4. Step 4: Simplify right side
    257,466.72x = 55,734,615,604.10
  5. Step 5: Solve for x
    x = 55,734,615,604.10/257,466.72
  6. Step 6: Final answer
    x = 216,473.09

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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.