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Finding the Fourth Proportional to 388,506.96, 536,156.14 and 216,424.72

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Solution

The fourth proportional to 388,506.96, 536,156.14 and 216,424.72 is: 298,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,506.96 : 536,156.14 = 216,424.72 : x
  2. Step 2: Convert to fraction form
    388,506.96/536,156.14 = 216,424.72/x
  3. Step 3: Cross multiply
    388,506.96x = 536,156.14 × 216,424.72
  4. Step 4: Simplify right side
    388,506.96x = 116,037,442,475.78
  5. Step 5: Solve for x
    x = 116,037,442,475.78/388,506.96
  6. Step 6: Final answer
    x = 298,675.32

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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.