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Finding the Fourth Proportional to 281,480.60, 388,346.76 and 160,534.91

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Solution

The fourth proportional to 281,480.60, 388,346.76 and 160,534.91 is: 221,483.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,480.60 : 388,346.76 = 160,534.91 : x
  2. Step 2: Convert to fraction form
    281,480.60/388,346.76 = 160,534.91/x
  3. Step 3: Cross multiply
    281,480.60x = 388,346.76 × 160,534.91
  4. Step 4: Simplify right side
    281,480.60x = 62,343,210,223.66
  5. Step 5: Solve for x
    x = 62,343,210,223.66/281,480.60
  6. Step 6: Final answer
    x = 221,483.15

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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.