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Finding the Fourth Proportional to 389,017.62, 536,853.82 and 216,933.92

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Solution

The fourth proportional to 389,017.62, 536,853.82 and 216,933.92 is: 299,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,017.62 : 536,853.82 = 216,933.92 : x
  2. Step 2: Convert to fraction form
    389,017.62/536,853.82 = 216,933.92/x
  3. Step 3: Cross multiply
    389,017.62x = 536,853.82 × 216,933.92
  4. Step 4: Simplify right side
    389,017.62x = 116,461,803,639.57
  5. Step 5: Solve for x
    x = 116,461,803,639.57/389,017.62
  6. Step 6: Final answer
    x = 299,374.11

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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.