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Finding the Fourth Proportional to 386,347.34, 533,160.60 and 216,570.50

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Solution

The fourth proportional to 386,347.34, 533,160.60 and 216,570.50 is: 298,868.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,347.34 : 533,160.60 = 216,570.50 : x
  2. Step 2: Convert to fraction form
    386,347.34/533,160.60 = 216,570.50/x
  3. Step 3: Cross multiply
    386,347.34x = 533,160.60 × 216,570.50
  4. Step 4: Simplify right side
    386,347.34x = 115,466,857,722.30
  5. Step 5: Solve for x
    x = 115,466,857,722.30/386,347.34
  6. Step 6: Final answer
    x = 298,868.00

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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.