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Finding the Fourth Proportional to 389,302.80, 584,148.60 and 220,952.40

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Solution

The fourth proportional to 389,302.80, 584,148.60 and 220,952.40 is: 331,538.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,302.80 : 584,148.60 = 220,952.40 : x
  2. Step 2: Convert to fraction form
    389,302.80/584,148.60 = 220,952.40/x
  3. Step 3: Cross multiply
    389,302.80x = 584,148.60 × 220,952.40
  4. Step 4: Simplify right side
    389,302.80x = 129,069,035,126.64
  5. Step 5: Solve for x
    x = 129,069,035,126.64/389,302.80
  6. Step 6: Final answer
    x = 331,538.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.