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Finding the Fourth Proportional to 281,637, 388,691.60 and 160,795.53

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Solution

The fourth proportional to 281,637, 388,691.60 and 160,795.53 is: 221,916.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,637 : 388,691.60 = 160,795.53 : x
  2. Step 2: Convert to fraction form
    281,637/388,691.60 = 160,795.53/x
  3. Step 3: Cross multiply
    281,637x = 388,691.60 × 160,795.53
  4. Step 4: Simplify right side
    281,637x = 62,499,871,024.57
  5. Step 5: Solve for x
    x = 62,499,871,024.57/281,637
  6. Step 6: Final answer
    x = 221,916.41

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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.