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Finding the Fourth Proportional to 281,370.72, 388,328.58 and 160,484.30

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Solution

The fourth proportional to 281,370.72, 388,328.58 and 160,484.30 is: 221,489.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,370.72 : 388,328.58 = 160,484.30 : x
  2. Step 2: Convert to fraction form
    281,370.72/388,328.58 = 160,484.30/x
  3. Step 3: Cross multiply
    281,370.72x = 388,328.58 × 160,484.30
  4. Step 4: Simplify right side
    281,370.72x = 62,320,637,587.23
  5. Step 5: Solve for x
    x = 62,320,637,587.23/281,370.72
  6. Step 6: Final answer
    x = 221,489.42

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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.