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Finding the Fourth Proportional to 384,686.52, 530,776.42 and 223,445.76

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Solution

The fourth proportional to 384,686.52, 530,776.42 and 223,445.76 is: 308,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,686.52 : 530,776.42 = 223,445.76 : x
  2. Step 2: Convert to fraction form
    384,686.52/530,776.42 = 223,445.76/x
  3. Step 3: Cross multiply
    384,686.52x = 530,776.42 × 223,445.76
  4. Step 4: Simplify right side
    384,686.52x = 118,599,740,556.98
  5. Step 5: Solve for x
    x = 118,599,740,556.98/384,686.52
  6. Step 6: Final answer
    x = 308,302.30

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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.